test format-patch -s: make sure MIME content type is shown as needed

diff --git a/builtin-rerere.c b/builtin-rerere.c
index 6ffc43d86440727cf9a782ed8fc0f68755551796..29d057c98cc255e718df540a62177101d9789abe 100644 (file)
--- a/builtin-rerere.c
+++ b/builtin-rerere.c
@@ -1,3 +1,4 @@
+#include "builtin.h"
 #include "cache.h"
 #include "path-list.h"
 #include "xdiff/xdiff.h"