[7740] More correct flags in trainer list data for profession ranks.

Note: this is not fix problem with gren show recently learned non-first rank of primary profession.

Thanks to Seizerkiller for help in reseach.

src/game/Player.cpp

@@ -3705,7 +3705,7 @@ TrainerSpellState Player::GetTrainerSpellState(TrainerSpell const* trainer_spell
 
     // check primary prof. limit
     if(spellmgr.IsPrimaryProfessionFirstRankSpell(spell->Id) && GetFreePrimaryProffesionPoints() == 0)
-        return TRAINER_SPELL_RED;
+        return TRAINER_SPELL_GREEN_DISABLED;
 
     return TRAINER_SPELL_GREEN;
 }