fix gharbad and vision

Source/lighting.cpp

@@ -643,6 +643,7 @@ void DoUnVision(int nXPos, int nYPos, int nRadius)
 	int i, j, x1, y1, x2, y2;
 
 	nRadius++;
+	nRadius++; // increasing the radius even further here prevents leaving stray vision tiles behind and doesn't seem to affect monster AI - applying new vision happens in the same tick
 	y1 = nYPos - nRadius;
 	y2 = nYPos + nRadius;
 	x1 = nXPos - nRadius;

Source/player.cpp

@@ -2198,8 +2198,6 @@ bool PM_DoWalk(int pnum, int variant)
 		switch (variant) {
 		case PM_WALK:
 			dPlayer[plr[pnum]._px][plr[pnum]._py] = 0;
-			if (leveltype != DTYPE_TOWN && pnum == myplr)
-				DoUnVision(plr[pnum]._px, plr[pnum]._py, plr[pnum]._pLightRad); // fix for incorrect vision updating
 			plr[pnum]._px += plr[pnum]._pVar1;
 			plr[pnum]._py += plr[pnum]._pVar2;
 			dPlayer[plr[pnum]._px][plr[pnum]._py] = pnum + 1;
@@ -2209,8 +2207,6 @@ bool PM_DoWalk(int pnum, int variant)
 			break;
 		case PM_WALK3:
 			dPlayer[plr[pnum]._px][plr[pnum]._py] = 0;
-			if (leveltype != DTYPE_TOWN && pnum == myplr)
-				DoUnVision(plr[pnum]._px, plr[pnum]._py, plr[pnum]._pLightRad); // fix for incorrect vision updating
 			dFlags[plr[pnum]._pVar4][plr[pnum]._pVar5] &= ~BFLAG_PLAYERLR;
 			plr[pnum]._px = plr[pnum]._pVar1;
 			plr[pnum]._py = plr[pnum]._pVar2;