rev-list: drop unused void pointer from finish_commit()

Our finish_commit() function used to be passed directly to the revision
machinery as a callback. But after 9899372 (rev-list: fix
--verify-objects --quiet becoming --objects, 2012-02-28), it is used
only as a helper in show_commit().

It doesn't use its void "data" parameter, and we no longer have to
conform to the callback interface. Let's drop it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: peff

builtin/rev-list.c

@@ -77,7 +77,7 @@ static enum missing_action arg_missing_action;
 
 #define DEFAULT_OIDSET_SIZE     (16*1024)
 
-static void finish_commit(struct commit *commit, void *data);
+static void finish_commit(struct commit *commit);
 static void show_commit(struct commit *commit, void *data)
 {
 	struct rev_list_info *info = data;
@@ -86,7 +86,7 @@ static void show_commit(struct commit *commit, void *data)
 	display_progress(progress, ++progress_counter);
 
 	if (info->flags & REV_LIST_QUIET) {
-		finish_commit(commit, data);
+		finish_commit(commit);
 		return;
 	}
 
@@ -99,7 +99,7 @@ static void show_commit(struct commit *commit, void *data)
 			revs->count_left++;
 		else
 			revs->count_right++;
-		finish_commit(commit, data);
+		finish_commit(commit);
 		return;
 	}
 
@@ -188,10 +188,10 @@ static void show_commit(struct commit *commit, void *data)
 			putchar('\n');
 	}
 	maybe_flush_or_die(stdout, "stdout");
-	finish_commit(commit, data);
+	finish_commit(commit);
 }
 
-static void finish_commit(struct commit *commit, void *data)
+static void finish_commit(struct commit *commit)
 {
 	if (commit->parents) {
 		free_commit_list(commit->parents);