Add missing includes

diff --git a/testsuite/reftests/image-compare.c b/testsuite/reftests/image-compare.c
index a69bdeac3f42157e53b771226d746ad5e2c204d0..07bb79e4e06ed9991e760ed269723f4b7351130b 100644 (file)
--- a/testsuite/reftests/image-compare.c
+++ b/testsuite/reftests/image-compare.c
@@ -1,5 +1,7 @@
 #include "config.h"
 
+#include <stdlib.h>
+
 #include "reftest-compare.h"
 
 static char *opt_filename;