[Qemu-trivial] [PATCH] cmd: Fix potential NULL pointer dereference

[Pavel Borzenkov <pavel.borzenkov@gmail.com>]

Signed-off-by: Pavel Borzenkov <pavel.borzenkov@gmail.com>
---
Note, that almost all code in the file violates CODING STYLE. The changed lines
are written wrt CODING STYLE (like commits 7d7d975c and c32d766a).
---

 cmd.c |   11 +++--------
 1 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/cmd.c b/cmd.c
index f77897e..abcf206 100644
--- a/cmd.c
+++ b/cmd.c
@@ -49,7 +49,7 @@ void
 add_command(
 	const cmdinfo_t	*ci)
 {
-	cmdtab = realloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab));
+    cmdtab = g_realloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab));
 	cmdtab[ncmds - 1] = *ci;
 	qsort(cmdtab, ncmds, sizeof(*cmdtab), compare);
 }
@@ -125,12 +125,7 @@ find_command(
 void
 add_user_command(char *optarg)
 {
-	ncmdline++;
-	cmdline = realloc(cmdline, sizeof(char*) * (ncmdline));
-	if (!cmdline) {
-		perror("realloc");
-		exit(1);
-	}
+    cmdline = g_realloc(cmdline, ++ncmdline * sizeof(char *));
 	cmdline[ncmdline-1] = optarg;
 }
 
@@ -194,7 +189,7 @@ command_loop(void)
 		doneline(input, v);
 	}
 	if (cmdline) {
-		free(cmdline);
+        g_free(cmdline);
 		return;
 	}
 
-- 
1.7.0.4