Core/Spells: Fix deprecated sprintf AppleClang warning.

Author: r4d1sh

src/server/game/Spells/SpellScript.cpp

@@ -21,6 +21,7 @@
 #include "ScriptMgr.h"
 #include "SpellAuras.h"
 #include "SpellMgr.h"
+#include "StringConvert.h"
 #include "Unit.h"
 #include <sstream>
 #include <string>
@@ -146,9 +147,7 @@ std::string _SpellScript::EffectNameCheck::ToString()
         case SPELL_EFFECT_ANY:
             return "SPELL_EFFECT_ANY";
         default:
-            char num[10];
-            sprintf (num, "%u", effName);
-            return num;
+            return Trinity::ToString(effName);
     }
 }
 
@@ -169,9 +168,7 @@ std::string _SpellScript::EffectAuraNameCheck::ToString()
         case SPELL_AURA_ANY:
             return "SPELL_AURA_ANY";
         default:
-            char num[10];
-            sprintf (num, "%u", effAurName);
-            return num;
+            return Trinity::ToString(effAurName);
     }
 }