citra-emu/citra — pull request #297 by lioncash (2014-12-17 20:38:14+00:00)
Title: armemu: Fix SSUB16

Broken from the same reason SADD16 was.

The lo part of the result should only be constructed from the lo halfwords of rm and rn.
The hi part of the result should only be constructed from the hi halfwords of rm and rn.