Allow for null user in end of move effect phase

src/battle-phases.ts

@@ -1739,6 +1739,7 @@ export class MoveEffectPhase extends PokemonPhase {
 
   end() {
     const user = this.getUserPokemon();
+    if (user) {
       if (--user.turnData.hitsLeft >= 1 && this.getTarget()?.isActive())
         this.scene.unshiftPhase(this.getNewHitPhase());
       else {
@@ -1746,6 +1747,7 @@ export class MoveEffectPhase extends PokemonPhase {
           this.scene.queueMessage(`Hit ${user.turnData.hitCount} time(s)!`);
         this.scene.applyModifiers(HitHealModifier, this.player, user);
       }
+    }
     
     super.end();
   }