tags: drop nested function

mercurial/localrepo.py

@@ -290,10 +290,9 b' class localrepository(repo.repository):'
                 globaltags[k] = an, ah
                 tagtypes[k] = tagtype
 
-        def tagctxs():
             seen = set()
             f = None
-            ret = []
+        ctxs = []
             for node in self.heads():
                 try:
                     fnode = self[node].filenode('.hgtags')
@@ -305,11 +304,10 b' class localrepository(repo.repository):'
                         f = self.filectx('.hgtags', fileid=fnode)
                     else:
                         f = f.filectx(fnode)
-                    ret.append(f)
-            return reversed(ret)
+                ctxs.append(f)
 
         # read the tags file from each head, ending with the tip
-        for f in tagctxs():
+        for f in reversed(ctxs):
             readtags(f.data().splitlines(), f, "global")
 
         try: