- SW: processWeapon must check for valid player sprites.

On map start it can happen that this gets called with an incompletely set up map.

source/games/sw/src/input.cpp

@@ -80,6 +80,7 @@ enum
 
 static void processWeapon(PLAYERp const pp)
 {
+    if (pp->PlayerSprite < 0) return;
     USERp u = User[pp->PlayerSprite].Data();
     int i;