VIF: Allow VIF1 to continue if stalled and the FIFO is reversed

pcsx2/Vif1_Dma.cpp

@@ -486,6 +486,7 @@ void dmaVIF1()
 
 	// Check VIF isn't stalled before starting the loop.
 	// Batman Vengence does something stupid and instead of cancelling a stall it tries to restart VIF, THEN check the stall
-	if (!vif1Regs.stat.test(VIF1_STAT_VSS | VIF1_STAT_VIS | VIF1_STAT_VFS))
+	// However if VIF FIFO is reversed, it can continue
+	if (!vif1ch.chcr.DIR || !vif1Regs.stat.test(VIF1_STAT_VSS | VIF1_STAT_VIS | VIF1_STAT_VFS))
 		CPU_INT(DMAC_VIF1, 4);
 }