Use the appropriate Variant hash and compare functions for Dictionaries

Dictionaires did not use the VariantHasher and VariantComparator making
them unsafe for use with NaN values as keys. This PR uses the
appropriate Variant implementations for these functions.

   var d = {}
   d[Vector2(NAN, NAN)] = 0
   d[Vector2(NAN, NAN)] = 0
   print(d.size())

will now output '1' and not '2'

This fixes #16031

core/dictionary.cpp

@@ -34,15 +34,10 @@
 #include "safe_refcount.h"
 #include "variant.h"
 
-struct _DictionaryVariantHash {
-
-	static _FORCE_INLINE_ uint32_t hash(const Variant &p_variant) { return p_variant.hash(); }
-};
-
 struct DictionaryPrivate {
 
 	SafeRefCount refcount;
-	OrderedHashMap<Variant, Variant, _DictionaryVariantHash> variant_map;
+	OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator> variant_map;
 };
 
 void Dictionary::get_key_list(List<Variant> *p_keys) const {
@@ -50,7 +45,7 @@ void Dictionary::get_key_list(List<Variant> *p_keys) const {
 	if (_p->variant_map.empty())
 		return;
 
-	for (OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::Element E = _p->variant_map.front(); E; E = E.next()) {
+	for (OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::Element E = _p->variant_map.front(); E; E = E.next()) {
 		p_keys->push_back(E.key());
 	}
 }
@@ -66,7 +61,7 @@ const Variant &Dictionary::operator[](const Variant &p_key) const {
 }
 const Variant *Dictionary::getptr(const Variant &p_key) const {
 
-	OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::ConstElement E = ((const OrderedHashMap<Variant, Variant, _DictionaryVariantHash> *)&_p->variant_map)->find(p_key);
+	OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::ConstElement E = ((const OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator> *)&_p->variant_map)->find(p_key);
 
 	if (!E)
 		return NULL;
@@ -75,7 +70,7 @@ const Variant *Dictionary::getptr(const Variant &p_key) const {
 
 Variant *Dictionary::getptr(const Variant &p_key) {
 
-	OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::Element E = _p->variant_map.find(p_key);
+	OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::Element E = _p->variant_map.find(p_key);
 
 	if (!E)
 		return NULL;
@@ -84,7 +79,7 @@ Variant *Dictionary::getptr(const Variant &p_key) {
 
 Variant Dictionary::get_valid(const Variant &p_key) const {
 
-	OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::ConstElement E = ((const OrderedHashMap<Variant, Variant, _DictionaryVariantHash> *)&_p->variant_map)->find(p_key);
+	OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::ConstElement E = ((const OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator> *)&_p->variant_map)->find(p_key);
 
 	if (!E)
 		return Variant();
@@ -177,7 +172,7 @@ Array Dictionary::keys() const {
 		return varr;
 
 	int i = 0;
-	for (OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::Element E = _p->variant_map.front(); E; E = E.next()) {
+	for (OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::Element E = _p->variant_map.front(); E; E = E.next()) {
 		varr[i] = E.key();
 		i++;
 	}
@@ -193,7 +188,7 @@ Array Dictionary::values() const {
 		return varr;
 
 	int i = 0;
-	for (OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::Element E = _p->variant_map.front(); E; E = E.next()) {
+	for (OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::Element E = _p->variant_map.front(); E; E = E.next()) {
 		varr[i] = E.get();
 		i++;
 	}
@@ -209,7 +204,7 @@ const Variant *Dictionary::next(const Variant *p_key) const {
 			return &_p->variant_map.front().key();
 		return NULL;
 	}
-	OrderedHashMap<Variant, Variant, _DictionaryVariantHash>::Element E = _p->variant_map.find(*p_key);
+	OrderedHashMap<Variant, Variant, VariantHasher, VariantComparator>::Element E = _p->variant_map.find(*p_key);
 
 	if (E && E.next())
 		return &E.next().key();