diff-tree: don't write headers if the diff queue is empty

This is not a pickaxe-specific thing, we do this regardless of
what has pruned down the diff queue.

diff --git a/diff-tree.c b/diff-tree.c
index 0d21b18..31f8019 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -267,12 +267,12 @@ static int call_diff_flush(void)
        if (detect_rename)
                diffcore_rename(detect_rename, diff_score_opt);
        diffcore_prune();
-       if (pickaxe) {
+       if (pickaxe)
                diffcore_pickaxe(pickaxe);
-               if (diff_queue_is_empty()) {
-                       diff_flush(DIFF_FORMAT_NO_OUTPUT, 0);
-                       return 0;
-               }
+
+       if (diff_queue_is_empty()) {
+               diff_flush(DIFF_FORMAT_NO_OUTPUT, 0);
+               return 0;
        }
        if (nr_paths)
                diffcore_pathspec(paths);