builtin-commit: Add newline when showing which commit was created

The function log_tree_commit() does not break the line, so we have to
do it ourselves.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-commit.c

@@ -494,6 +494,7 @@ static void print_summary(const char *prefix, const unsigned char *sha1)
 	printf("Created %scommit ", initial_commit ? "initial " : "");
 
 	log_tree_commit(&rev, commit);
+	printf("\n");
 }
 
 int git_commit_config(const char *k, const char *v)