gatchat: explicitly compare pointers to NULL

This patch was generated by the following semantic patch
(http://coccinelle.lip6.fr/)

// <smpl>
@fix disable is_null,isnt_null1@
expression *E;
@@

- !E
+ E == NULL
// </smpl>

1 files changed, 24 insertions, 28 deletions

diff --git a/gatchat/gatchat.c b/gatchat/gatchat.c
index 218f5921..d82a02ea 100644
--- a/gatchat/gatchat.c
+++ b/gatchat/gatchat.c
@@ -253,12 +253,12 @@ static struct at_command *at_command_create(guint gid, const char *cmd,
 	}
 
 	c = g_try_new0(struct at_command, 1);
-	if (!c)
+	if (c == NULL)
 		return 0;
 
 	len = strlen(cmd);
 	c->cmd = g_try_new(char, len + 2);
-	if (!c->cmd) {
+	if (c->cmd == NULL) {
 		g_free(c);
 		return 0;
 	}
@@ -408,7 +408,7 @@ static gboolean at_chat_match_notify(struct at_chat *chat, char *line)
 			return TRUE;
 		}
 
-		if (!result.lines)
+		if (result.lines == NULL)
 			result.lines = g_slist_prepend(NULL, line);
 
 		g_slist_foreach(notify->nodes, at_notify_call_callback,
@@ -434,7 +434,7 @@ static void at_chat_finish_command(struct at_chat *p, gboolean ok, char *final)
 	GSList *response_lines;
 
 	/* Cannot happen, but lets be paranoid */
-	if (!cmd)
+	if (cmd == NULL)
 		return;
 
 	p->cmd_bytes_written = 0;
@@ -567,7 +567,7 @@ static void have_line(struct at_chat *p, char *str)
 	/* We're not going to copy terminal <CR><LF> */
 	struct at_command *cmd;
 
-	if (!str)
+	if (str == NULL)
 		return;
 
 	/* Check for echo, this should not happen, but lets be paranoid */
@@ -638,7 +638,7 @@ static void have_pdu(struct at_chat *p, char *pdu)
 	GAtResult result;
 	gboolean listing_pdu = FALSE;
 
-	if (!pdu)
+	if (pdu == NULL)
 		goto error;
 
 	result.lines = g_slist_prepend(NULL, p->pdu_notify);
@@ -703,7 +703,7 @@ static char *extract_line(struct at_chat *p, struct ring_buffer *rbuf)
 	}
 
 	line = g_try_new(char, line_length + 1);
-	if (!line) {
+	if (line == NULL) {
 		ring_buffer_drain(rbuf, p->read_so_far);
 		return NULL;
 	}
@@ -800,10 +800,10 @@ static gboolean wakeup_no_response(gpointer user_data)
 		return FALSE;
 
 	at_chat_finish_command(chat, FALSE, NULL);
+
 	cmd = at_command_create(0, chat->wakeup, none_prefix, FALSE,
 				NULL, wakeup_cb, chat, NULL, TRUE);
-
-	if (!cmd) {
+	if (cmd == NULL) {
 		chat->timeout_source = 0;
 		return FALSE;
 	}
@@ -842,7 +842,7 @@ static gboolean can_write_data(gpointer data)
 		return FALSE;
 
 	if (chat->wakeup) {
-		if (!chat->wakeup_timer) {
+		if (chat->wakeup_timer == NULL) {
 			wakeup_first = TRUE;
 			chat->wakeup_timer = g_timer_new();
 
@@ -854,8 +854,7 @@ static gboolean can_write_data(gpointer data)
 	if (chat->cmd_bytes_written == 0 && wakeup_first == TRUE) {
 		cmd = at_command_create(0, chat->wakeup, none_prefix, FALSE,
 					NULL, wakeup_cb, chat, NULL, TRUE);
-
-		if (!cmd)
+		if (cmd == NULL)
 			return FALSE;
 
 		g_queue_push_head(chat->command_queue, cmd);
@@ -1005,8 +1004,7 @@ static guint at_chat_send_common(struct at_chat *chat, guint gid,
 
 	c = at_command_create(gid, cmd, prefix_list, expect_pdu, listing, func,
 				user_data, notify, FALSE);
-
-	if (!c)
+	if (c == NULL)
 		return 0;
 
 	c->id = chat->next_cmd_id++;
@@ -1027,12 +1025,11 @@ static struct at_notify *at_notify_create(struct at_chat *chat,
 	char *key;
 
 	key = g_strdup(prefix);
-
-	if (!key)
+	if (key == NULL)
 		return 0;
 
 	notify = g_try_new0(struct at_notify, 1);
-	if (!notify) {
+	if (notify == NULL) {
 		g_free(key);
 		return 0;
 	}
@@ -1055,7 +1052,7 @@ static gboolean at_chat_cancel(struct at_chat *chat, guint group, guint id)
 	l = g_queue_find_custom(chat->command_queue, GUINT_TO_POINTER(id),
 				at_command_compare_by_id);
 
-	if (!l)
+	if (l == NULL)
 		return FALSE;
 
 	c = l->data;
@@ -1124,14 +1121,14 @@ static guint at_chat_register(struct at_chat *chat, guint group,
 
 	notify = g_hash_table_lookup(chat->notify_list, prefix);
 
-	if (!notify)
+	if (notify == NULL)
 		notify = at_notify_create(chat, prefix, expect_pdu);
 
-	if (!notify || notify->pdu != expect_pdu)
+	if (notify == NULL || notify->pdu != expect_pdu)
 		return 0;
 
 	node = g_try_new0(struct at_notify_node, 1);
-	if (!node)
+	if (node == NULL)
 		return 0;
 
 	node->id = chat->next_notify_id++;
@@ -1165,7 +1162,7 @@ static gboolean at_chat_unregister(struct at_chat *chat, gboolean mark_only,
 		l = g_slist_find_custom(notify->nodes, GUINT_TO_POINTER(id),
 					at_notify_node_compare_by_id);
 
-		if (!l)
+		if (l == NULL)
 			continue;
 
 		node = l->data;
@@ -1206,14 +1203,14 @@ static struct at_chat *create_chat(GIOChannel *channel, GIOFlags flags,
 {
 	struct at_chat *chat;
 
-	if (!channel)
+	if (channel == NULL)
 		return NULL;
 
-	if (!syntax)
+	if (syntax == NULL)
 		return NULL;
 
 	chat = g_try_new0(struct at_chat, 1);
-	if (!chat)
+	if (chat == NULL)
 		return chat;
 
 	chat->ref_count = 1;
@@ -1226,14 +1223,13 @@ static struct at_chat *create_chat(GIOChannel *channel, GIOFlags flags,
 	else
 		chat->io = g_at_io_new_blocking(channel);
 
-	if (!chat->io)
+	if (chat->io == NULL)
 		goto error;
 
 	g_at_io_set_disconnect_function(chat->io, io_disconnect, chat);
 
 	chat->command_queue = g_queue_new();
-
-	if (!chat->command_queue)
+	if (chat->command_queue == NULL)
 		goto error;
 
 	chat->notify_list = g_hash_table_new_full(g_str_hash, g_str_equal,