Scripts/Misc: Fix issues reported by static analysis

src/server/scripts/Pet/pet_mage.cpp

@@ -178,6 +178,9 @@ class npc_pet_mage_mirror_image : public CreatureScript
             void UpdateAI(uint32 diff) override
             {
                 Unit* owner = me->GetCharmerOrOwner();
+                if (!owner)
+                    return;
+
                 Unit* target = owner->getAttackerForHelper();
 
                 events.Update(diff);
@@ -192,9 +195,6 @@ class npc_pet_mage_mirror_image : public CreatureScript
                 if (me->HasUnitState(UNIT_STATE_CASTING))
                     return;
 
-                if (!owner)
-                    return;
-
                 // assign target if image doesnt have any or the target is not actual
                 if (!target || me->GetVictim() != target)
                 {

src/server/scripts/Spells/spell_paladin.cpp

@@ -1195,7 +1195,7 @@ class spell_pal_light_s_beacon : public SpellScriptLoader
                 if (!procSpell)
                     return;
 
-                uint32 healSpellId = procSpell->IsRankOf(sSpellMgr->GetSpellInfo(SPELL_PALADIN_HOLY_LIGHT)) ? SPELL_PALADIN_BEACON_OF_LIGHT_HEAL_1 : SPELL_PALADIN_BEACON_OF_LIGHT_HEAL_3;
+                uint32 healSpellId = procSpell->IsRankOf(sSpellMgr->EnsureSpellInfo(SPELL_PALADIN_HOLY_LIGHT)) ? SPELL_PALADIN_BEACON_OF_LIGHT_HEAL_1 : SPELL_PALADIN_BEACON_OF_LIGHT_HEAL_3;
                 uint32 heal = CalculatePct(eventInfo.GetHealInfo()->GetHeal(), aurEff->GetAmount());
 
                 Unit* beaconTarget = GetCaster();