Apply Python 3 futurize transform libmodernize.fixes.fix_zip.

integrations/perforce/git_p4.py

@@ -13,6 +13,7 @@ import sys
 import six
 from six.moves import input
 from six.moves import range
+from six.moves import zip
 if sys.hexversion < 0x02040000:
     # The limiter is the subprocess module
     sys.stderr.write("git-p4: requires Python 2.4 or later.\n")