[committed] [RISC-V] Fix more fallout from combine.c changes -- correct patch attached this time

Whoops, attached wrong patch to last message. This is the right patch. Trivial fallout from the recent combine work. We end up with a srai rather than an xor in some of the saturation sequences. Both variants look equally performant, so I'm just adjusting the expected test output. Pushing

[committed] [RISC-V] Fix more fallout from combine.c changes

Trivial fallout from the recent combine work. We end up with a srai rather than an xor in some of the saturation sequences. Both variants look equally performant, so I'm just adjusting the expected test output. Pushing to the trunk. Jeff commit c08d717ce9e18dcfa5b4efe49a5f570ac32fd1cf Autho