Fix #1928

* disallow geneie to cast teleport

lib/CBattleCallback.cpp

@@ -2295,6 +2295,7 @@ SpellID CBattleInfoCallback::getRandomBeneficialSpell(const CStack * subject) co
 						continue;
 				}
 				break;
+			case SpellID::TELEPORT: //issue 1928
 			case SpellID::CLONE: //not allowed
 				continue;
 				break;

lib/NetPacksLib.cpp

@@ -1197,6 +1197,7 @@ void BattleResult::applyGs( CGameState *gs )
 void BattleStackMoved::applyGs( CGameState *gs )
 {
 	CStack *s = gs->curB->getStack(stack);
+	assert(s);
 	BattleHex dest = tilesToMove.back();
 
 	//if unit ended movement on quicksands that were created by enemy, that quicksand patch becomes visible for owner