RP Blitter: Skip setting fMemsetColor for F32 color type

Computing the memset color doesn't help in this case, because we aren't
going to use it anyway (we only have memset implementations for smaller
color types). More importantly: The pipeline we ran to compute it wrote
16 bytes of data to an 8 byte field in the blitter. This actually wrote
over the innards of fBlitRect.

Change-Id: I51eaa366035a6e37f5b5926e2d2fa9bde6684dba
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/658919
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed