formatting: re-blacken match.py

Differential Revision: https://phab.mercurial-scm.org/D9512

mercurial/match.py

@@ -640,10 +640,7 b' class patternmatcher(basematcher):'
     def visitdir(self, dir):
         if self._prefix and dir in self._fileset:
             return b'all'
-        return (
-            dir in self._dirs
-            or path_or_parents_in_set(dir, self._fileset)
-        )
+        return dir in self._dirs or path_or_parents_in_set(dir, self._fileset)
 
     def visitchildrenset(self, dir):
         ret = self.visitdir(dir)