cmdutil: suppress bogus pytype errors

pytype seems to handle our subclass of tuple (scmutil.status)
especially poorly. We should probably file a bug.

Differential Revision: https://phab.mercurial-scm.org/D7294

mercurial/cmdutil.py

@@ -347,7 +347,7 b' def filterchunks(ui, originalhunks, usec'
                 ui, originalhunks, recordfn, operation
             )
     except crecordmod.fallbackerror as e:
-        ui.warn(b'%s\n' % e.message)
+        ui.warn(b'%s\n' % e.message)  # pytype: disable=attribute-error
         ui.warn(_(b'falling back to text mode\n'))
 
     return patch.filterpatch(ui, originalhunks, match, operation)
@@ -435,7 +435,7 b' def dorecord('
                 copymod.copy(status[3]),
                 copymod.copy(status[4]),
                 copymod.copy(status[5]),
-                copymod.copy(status[6]),
+                copymod.copy(status[6]),  # pytype: disable=wrong-arg-count
             )
 
             # Force allows -X subrepo to skip the subrepo.
@@ -1289,7 +1289,7 b' def openstorage(repo, cmd, file_, opts, '
             if isinstance(r, revlog.revlog):
                 pass
             elif util.safehasattr(r, b'_revlog'):
-                r = r._revlog
+                r = r._revlog  # pytype: disable=attribute-error
             elif r is not None:
                 raise error.Abort(_(b'%r does not appear to be a revlog') % r)