Quickfix a bug introduced by 2f19d97 which prevented GTAoE from being cast.

src/server/game/Spells/Spell.cpp

@@ -793,7 +793,7 @@ void Spell::SelectSpellTargets()
         if (m_spellInfo->IsChanneled())
         {
             // maybe do this for all spells?
-            if (m_UniqueTargetInfo.empty() && m_UniqueGOTargetInfo.empty() && m_UniqueItemInfo.empty())
+            if (m_UniqueTargetInfo.empty() && m_UniqueGOTargetInfo.empty() && m_UniqueItemInfo.empty() && !m_targets.HasDst())
             {
                 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
                 finish(false);