tests: scrub environment of GIT_* variables

diff --git a/commit.c b/commit.c
index 74d66018800d7a2a2b3a3365e87a23049690da6b..ac337c7d7dc1724fa918f9340816d3102edb10bd 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -245,10 +245,10 @@ int unregister_shallow(const unsigned char *sha1)
        return 0;
 }
 
-int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
+int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long size)
 {
-       char *tail = buffer;
-       char *bufptr = buffer;
+       const char *tail = buffer;
+       const char *bufptr = buffer;
        unsigned char parent[20];
        struct commit_list **pptr;
        struct commit_graft *graft;