pass struct commit to diff_tree_combined_merge()

Instead of passing the hash of a commit and then searching that
same commit in the single caller, simply pass the commit directly.

Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/diff.h b/diff.h
index 96085cbb0..ae71f4ccf 100644
--- a/diff.h
+++ b/diff.h
@@ -13,6 +13,7 @@ struct strbuf;
 struct diff_filespec;
 struct userdiff_driver;
 struct sha1_array;
+struct commit;
 
 typedef void (*change_fn_t)(struct diff_options *options,
 		 unsigned old_mode, unsigned new_mode,
@@ -198,7 +199,7 @@ extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
 
 extern void diff_tree_combined(const unsigned char *sha1, const struct sha1_array *parents, int dense, struct rev_info *rev);
 
-extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
+extern void diff_tree_combined_merge(const struct commit *commit, int dense, struct rev_info *rev);
 
 void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b);