svga: Fix incorrect format conversion blit destination

The blit.dst.resource member that was used as destination was
modified earlier in the function, effectively making us try to blit
the content onto itself. Fix this and also add a debug printout when the
format conversion blits fail.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Neha Bhende <bhenden@vmware.com>
1 file changed