libnm: don't assert against %NULL string in nm_utils_is_uuid()

For a "is" check, it's inconvenient to assert against the parameter
being %NULL. We should accept %NULL and just say that it's not a valid
uuid.

This relaxes previous API.

1 files changed, 6 insertions, 2 deletions

diff --git a/libnm-core/nm-utils.c b/libnm-core/nm-utils.c
index 5322a8d747..dc0b5b814e 100644
--- a/libnm-core/nm-utils.c
+++ b/libnm-core/nm-utils.c
@@ -4713,11 +4713,14 @@ nm_utils_iface_valid_name (const char *name)
 
 /**
  * nm_utils_is_uuid:
- * @str: a string that might be a UUID
+ * @str: (allow-none): a string that might be a UUID
  *
  * Checks if @str is a UUID
  *
  * Returns: %TRUE if @str is a UUID, %FALSE if not
+ *
+ * In older versions, nm_utils_is_uuid() did not accept %NULL as @str
+ * argument. Don't pass %NULL if you run against older versions of libnm.
  */
 gboolean
 nm_utils_is_uuid (const char *str)
@@ -4725,7 +4728,8 @@ nm_utils_is_uuid (const char *str)
 	const char *p = str;
 	int num_dashes = 0;
 
-	g_return_val_if_fail (str, FALSE);
+	if (!p)
+		return FALSE;
 
 	while (*p) {
 		if (*p == '-')