grep.c: remove implicit dependency on the_index

diff --git a/commit-graph.h b/commit-graph.h
index 76e098934a7f6740b52a479baa5c68fe605d1ea6..eea62f8c0ee53b56630a1a2b0c2c716b4cd63670 100644 (file)
--- a/commit-graph.h
+++ b/commit-graph.h
@@ -4,6 +4,7 @@
 #include "git-compat-util.h"
 #include "repository.h"
 #include "string-list.h"
+#include "cache.h"
 
 struct commit;