dirstate-item: fix the declaration of the Cext `from_v1_meth`

This method is apparently not called from anywhere since the declaration was
garbage.

We will start calling it in the next changeset.

Differential Revision: https://phab.mercurial-scm.org/D11317

mercurial/cext/parsers.c

@@ -232,8 +232,8 b' static PyMethodDef dirstate_item_methods'
      "return a \"mtime\" suitable for v1 serialization"},
     {"need_delay", (PyCFunction)dirstate_item_need_delay, METH_O,
      "True if the stored mtime would be ambiguous with the current time"},
-    {"from_v1_data", (PyCFunction)dirstate_item_from_v1_meth, METH_O,
-     "build a new DirstateItem object from V1 data"},
+    {"from_v1_data", (PyCFunction)dirstate_item_from_v1_meth,
+     METH_VARARGS | METH_CLASS, "build a new DirstateItem object from V1 data"},
     {"set_possibly_dirty", (PyCFunction)dirstate_item_set_possibly_dirty,
      METH_NOARGS, "mark a file as \"possibly dirty\""},
     {"set_untracked", (PyCFunction)dirstate_item_set_untracked, METH_NOARGS,