tests: scrub environment of GIT_* variables

diff --git a/commit.h b/commit.h
index eb6c5af1f6b18546b3b3f1683142b15bb0ae9e34..659c87c3ee90c23064f617e3bcf3ace12e32ea04 100644 (file)
--- a/commit.h
+++ b/commit.h
@@ -38,7 +38,7 @@ struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
                                              int quiet);
 struct commit *lookup_commit_reference_by_name(const char *name);
 
-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);
 int parse_commit(struct commit *item);
 
 /* Find beginning and length of commit subject. */