Include <limits.h> in commit.c for ULONG_MAX. Remove old "revision.h".

The old revision.h helper header isn't used any more, but I never noticed
it until I started grepping for ULONG_MAX users.

1 files changed, 1 insertions, 0 deletions

diff --git a/commit.c b/commit.c
index eda45d7e15..9f0668eb68 100644
--- a/commit.c
+++ b/commit.c
@@ -1,6 +1,7 @@
 #include "commit.h"
 #include "cache.h"
 #include <string.h>
+#include <limits.h>
 
 const char *commit_type = "commit";