Crash-Bug-Fix: Added check for attacker and victim in the hit function (thanks Lyceq)

changelog

@@ -36,6 +36,7 @@ Xlist (mlist, olist, rlist, zlist, slist, tlist, qlist)
 (lots of major bugfixes too)
 [May 15 2009] - Jamdog
   Fixed variable definition halfway through do_oasis_zedit to allow compilation in MSVC. (thanks Lyceq)
+  Crash-Bug-Fix: Added check for attacker and victim in the hit function (thanks Lyceq)
 [May 13 2009] - Jamdog
   Bug-Fix: quest join check for previous quest completion, and validation checks for prev and next quests in qedit. (thanks drefs)
 [Apr 13 2009] - Jamdog

src/fight.c

@@ -870,6 +870,9 @@ void hit(struct char_data *ch, struct char_data *victim, int type)
   struct obj_data *wielded = GET_EQ(ch, WEAR_WIELD);
   int w_type, victim_ac, calc_thaco, dam, diceroll;
 
+  /* Check that the attacker and victim exist */
+  if (!ch || !victim) return;
+
   /* check if the character has a fight trigger */
   fight_mtrigger(ch);