[Backtracing] Please the Python linter.

For some reason it wants two blank lines instead of one here.

rdar://107362003

Author: al45tair

utils/swift-darwin-postprocess.py

@@ -12,6 +12,7 @@
 utils = os.path.dirname(os.path.realpath(__file__))
 get_task_allow_plist = os.path.join(utils, 'get-task-allow.plist')
 
+
 def main(arguments):
     parser = argparse.ArgumentParser(
         description='Postprocess binaries to prepare for \