Scripts: Fix static analysis issues CID 1379870 and 1367941 (#20747)

src/server/scripts/Kalimdor/Firelands/boss_baleroc.cpp

@@ -719,7 +719,8 @@ class spell_baleroc_torment_AuraScript : public AuraScript
         uint32 stacks = healer->GetAuraCount(SPELL_VITAL_SPARK) + std::min(uint8(ceil(GetStackAmount() / (Is25ManHeroic ? 5 : 3))), uint8(255));
 
         healer->SetAuraStack(SPELL_VITAL_SPARK, healer, stacks);
-        healer->GetAura(SPELL_VITAL_SPARK)->RefreshDuration();
+        if (Aura* aura = healer->GetAura(SPELL_VITAL_SPARK))
+            aura->RefreshDuration();
     }
 
     void OnRemove(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/)

src/server/scripts/Outland/zone_hellfire_peninsula.cpp

@@ -975,7 +975,8 @@ public:
                 case EVENT_ATTACK:
                     me->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_IMMUNE_TO_PC);
                     me->setFaction(FACTION_HOSTILE);
-                    me->CombatStart(ObjectAccessor::GetPlayer(*me, _playerGUID));
+                    if (Player* player = ObjectAccessor::GetPlayer(*me, _playerGUID))
+                        me->CombatStart(player);
                     _events.ScheduleEvent(EVENT_FIREBALL, 1);
                     _events.ScheduleEvent(EVENT_FROSTNOVA, Seconds(5));
                     break;