Correctly detect smelting recipes (#3)

* Bugfix: Smelting was not being properly detected

* Bugfix: missed a variable cleanup

TradeSkillMaster_Crafting/Modules/CraftingGUI.lua

@@ -275,6 +275,7 @@ function GUI:EventHandler(event, ...)
 					--GUI:UpdateQueue()
 				end
 			end		
+			-- no longer casting a spell so discard spellID
 			TSM.currentspell = nil
 			-- TSMAPI:CreateTimeDelay("craftingQueueUpdateThrottle", 0.2, GUI.UpdateQueue)
 		elseif event == "UNIT_SPELLCAST_INTERRUPTED" or event == "UNIT_SPELLCAST_FAILED" or event == "UNIT_SPELLCAST_FAILED_QUIET" then
@@ -289,6 +290,8 @@ function GUI:EventHandler(event, ...)
 				GUI.isCrafting.quantity = 0
 				TSMAPI:CreateTimeDelay("craftingQueueUpdateThrottle", 0.2, GUI.UpdateQueue)
 			end
+			-- no longer casting a spell so discard spellID
+			TSM.currentspell = nil
 	end
 	end
 end
@@ -317,6 +320,7 @@ function GUI:UpdateTradeSkills()
 		skillName = GetSkillLineInfo(i)
 		if  skillName == "Professions" then --TRADE_SKILLS ) then
 			tradeSkill1, header = GetSkillLineInfo(i + 1);
+			if tradeSkill1 == "Mining" then tradeSkill1 = "Smelting" end
 			if header or not GetSpellInfo(tradeSkill1) then
 				tradeSkill1 = nil
 			else
@@ -324,6 +328,7 @@ function GUI:UpdateTradeSkills()
 			end
 
 			tradeSkill2, header = GetSkillLineInfo(i + 2);
+			if tradeSkill2 == "Mining" then tradeSkill2 = "Smelting" end
 			if header or not GetSpellInfo(tradeSkill2) then
 				tradeSkill2 = nil
 			else