Include <stdlib.h>.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@15118 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/sl/slc-lex.l

@@ -39,6 +39,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
 #include "slc.h"
 #include "slc-gram.h"
 unsigned lineno = 1;