Trivial tweaks to error messages

* strace.c (test_ptrace_setoptions_followfork): Use kill_save_errno
instead of kill.
(trace): Use perror_msg instead of perror.
* count.c (set_sortby): Use error_msg_and_die instead of fprintf.
* syscall.c (qualify): Likewise.
* util.c (ptrace_restart): Expand error message.
(umoven): Likewise.
(umovestr): Likewise.
(upeek): Use perror_msg instead of sprintf + perror.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/count.c b/count.c
index c53274750..673c35404 100644
--- a/count.c
+++ b/count.c
@@ -130,8 +130,7 @@ set_sortby(const char *sortby)
 	else if (strcmp(sortby, "nothing") == 0)
 		sortfun = NULL;
 	else {
-		fprintf(stderr, "invalid sortby: `%s'\n", sortby);
-		exit(1);
+		error_msg_and_die("invalid sortby: '%s'", sortby);
 	}
 }