fix resurrect (#2577)

Source/spells.cpp

@@ -249,14 +249,15 @@ void CastSpell(int id, int spl, int sx, int sy, int dx, int dy, int spllvl)
  * @param pnum player index
  * @param rid target player index
  */
-void DoResurrect(int pnum, int rid)
+void DoResurrect(int pnum, uint16_t rid)
 {
 	if (pnum == MyPlayerId) {
 		NewCursor(CURSOR_HAND);
 	}
 
-	if (rid == -1)
+	if ((DWORD)pnum >= MAX_PLRS || rid >= MAX_PLRS) {
 		return;
+	}
 
 	auto &target = Players[rid];
 

Source/spells.h

@@ -21,7 +21,7 @@ void UseMana(int id, spell_id sn);
 SpellCheckResult CheckSpell(int id, spell_id sn, spell_type st, bool manaonly);
 void EnsureValidReadiedSpell(PlayerStruct &player);
 void CastSpell(int id, int spl, int sx, int sy, int dx, int dy, int spllvl);
-void DoResurrect(int pnum, int rid);
+void DoResurrect(int pnum, uint16_t rid);
 void DoHealOther(int pnum, uint16_t rid);
 int GetSpellBookLevel(spell_id s);
 int GetSpellStaffLevel(spell_id s);