mq: fix regression in 6fd953d5faea
It caused qrefresh; qrefresh -X addedfile to leave the file as normal in dirstate.
It should be marked added on the second pass.
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
adding b
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
adding b