transplant: fix var name conflict introduced by 2912881c2a98

hgext/transplant.py

@@ -48,9 +48,9 b' class transplants(object):'
             if not os.path.isdir(self.path):
                 os.mkdir(self.path)
             fp = self.opener(self.transplantfile, 'w')
-            for l in self.transplants.itervalues():
-                for c in l:
-                    l, r = map(revlog.hex, (c.lnode, c.rnode))
+            for list in self.transplants.itervalues():
+                for t in list:
+                    l, r = map(revlog.hex, (t.lnode, t.rnode))
                     fp.write(l + ':' + r + '\n')
             fp.close()
         self.dirty = False