slight bugfix for shr_i16x2 in the interpreter

It's doing an arithmetic shift at head,
but we want a logical shift there...

Change-Id: I82eba87ccc3fba6a9511bf3a4d3ff88d90c29585
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/220855
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
1 file changed