Core/Misc: Future msvc warning fixes

src/server/game/Spells/SpellInfo.cpp

@@ -389,7 +389,7 @@ bool SpellEffectInfo::IsEffect() const
 
 bool SpellEffectInfo::IsEffect(SpellEffects effectName) const
 {
-    return Effect == uint32(effectName);
+    return Effect == effectName;
 }
 
 bool SpellEffectInfo::IsAura() const

src/server/shared/DataStores/DBStorageIterator.h

@@ -22,9 +22,15 @@
 #include <iterator>
 
 template<class T>
-class DBStorageIterator : public std::iterator<std::forward_iterator_tag, T>
+class DBStorageIterator
 {
 public:
+    using iterator_category = std::forward_iterator_tag;
+    using value_type = T;
+    using difference_type = std::ptrdiff_t;
+    using pointer = T*;
+    using reference = T&;
+
     DBStorageIterator() : _index(nullptr), _pos(0), _end(0) { }
     DBStorageIterator(T** index, uint32 size, uint32 pos = 0) : _index(index), _pos(pos), _end(size)
     {