get rid of warning

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6152 65c4cc65-6c06-0410-ace0-fbb531ad65f3

get rid of warning
7f88c954 · Russell Bryant · 5af10980 · 7f88c954
Commit 7f88c954 authored 19 years ago by Russell Bryant
--- a/build_tools/vercomp.c
+++ b/build_tools/vercomp.c
@@ -20,6 +20,7 @@

 */

+#include <stdlib.h>
 #include <stdio.h>
 #include <string.h>