cleanup

- use re.sub() iso. if for stripping ...
- spacing nits

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>

contrib/fast-import/git-p4

@@ -986,9 +986,7 @@ class P4Sync(Command):
         elif len(self.previousDepotPath) == 0:
             self.revision = "#head"
 
-        if self.depotPath.endswith("..."):
-            self.depotPath = self.depotPath[:-3]
-
+        self.depotPath = re.sub ("\.\.\.$", "", self.depotPath)
         if not self.depotPath.endswith("/"):
             self.depotPath += "/"