Don't write formatted tq files if nothing changed

This will prevent unnecessary recompilation effort on the subsequent
build, and avoids a common issue on Windows where format-torque replaces
all of the line endings in a .tq file without changing any actual
content.

Bug: v8:8805
Change-Id: Id695351c242739d92aef47cd09e651bfbe3c8f9a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1673456Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62357}

tools/torque/format-torque.py

@@ -120,14 +120,14 @@ def process(filename, lint, should_format):
     print("error code " + str(rc) + " running clang-format. Exiting...")
     sys.exit(rc);
 
-  if lint:
-    if (output != original_input):
+  if (output != original_input):
+    if lint:
       print(filename + ' requires formatting', file=sys.stderr)
 
-  if should_format:
-    output_file = open(filename, 'w')
-    output_file.write(output);
-    output_file.close()
+    if should_format:
+      output_file = open(filename, 'w')
+      output_file.write(output);
+      output_file.close()
 
 def print_usage():
   print('format-torque -i file1[, file2[, ...]]')