Merge pull request #2007 from cawtds/ub-fix-battle-transition

UB fix in battle_transition.c

src/battle_transition.c

@@ -1907,7 +1907,11 @@ static bool8 ClockwiseWipe_TopRight(struct Task *task)
 {
     sTransitionData->VBlank_DMA = FALSE;
 
+#ifdef UBFIX
+    InitBlackWipe(sTransitionData->data, DISPLAY_WIDTH / 2, DISPLAY_HEIGHT / 2, sTransitionData->tWipeEndX, 0, 1, 1);
+#else
     InitBlackWipe(sTransitionData->data, DISPLAY_WIDTH / 2, DISPLAY_HEIGHT / 2, sTransitionData->tWipeEndX, -1, 1, 1);
+#endif
     do
     {
         gScanlineEffectRegBuffers[0][sTransitionData->tWipeCurrY] = (sTransitionData->tWipeCurrX + 1) | ((DISPLAY_WIDTH / 2) << 8);