Fix end boss (bad gfx) in Battle Lane Vol.5 (battlane)
The end boss is an r2d2-looking thing drawn half in 1 direction, and the other half w/ flipy. The flipy case for double-Y sprites wasn't handled correctly.
source current as of April 1, 2021 (for mame/src/video/battlane.cpp) *first link*
credit: dink
best regards,
- dink
