Bug 1547730 - Use six.moves.reduce for reduce() r=glandium

Differential Revision: https://phabricator.services.mozilla.com/D28109

--HG--
extra : moz-landing-system : lando

python/mozbuild/mozbuild/preprocessor.py

@@ -718,7 +718,7 @@ class Preprocessor:
         for i in range(1, len(lst), 2):
             lst[i] = vsubst(lst[i])
         lst.append('\n')  # add back the newline
-        self.write(reduce(lambda x, y: x+y, lst, ''))
+        self.write(six.moves.reduce(lambda x, y: x+y, lst, ''))
 
     def do_literal(self, args):
         self.write(args + '\n')

python/mozbuild/mozpack/mozjar.py

@@ -567,8 +567,8 @@ class JarWriter(object):
         end = JarCdirEnd()
         end['disk_entries'] = len(self._contents)
         end['cdir_entries'] = end['disk_entries']
-        end['cdir_size'] = reduce(lambda x, y: x + y[0].size,
-                                  self._contents.values(), 0)
+        end['cdir_size'] = six.moves.reduce(lambda x, y: x + y[0].size,
+                                            self._contents.values(), 0)
         # On optimized archives, store the preloaded size and the central
         # directory entries, followed by the first end of central directory.
         if preload_size: