Remove unnecessary vector

Core/KeyMap.cpp

@@ -504,12 +504,9 @@ const char* GetPspButtonNameCharPointer(int btn) {
 	return nullptr;
 }
 
-std::vector<KeyMap_IntStrPair> GetMappableKeys() {
-	std::vector<KeyMap_IntStrPair> temp;
-	for (size_t i = 0; i < ARRAY_SIZE(psp_button_names); i++) {
-		temp.push_back(psp_button_names[i]);
-	}
-	return temp;
+const KeyMap::KeyMap_IntStrPair *GetMappableKeys(size_t *count) {
+	*count = ARRAY_SIZE(psp_button_names);
+	return psp_button_names;
 }
 
 bool InputMappingToPspButton(const InputMapping &mapping, std::vector<int> *pspButtons) {

Core/KeyMap.h

@@ -172,7 +172,7 @@ namespace KeyMap {
 	const char *GetVirtKeyName(int vkey);
 	const char *GetPspButtonNameCharPointer(int btn);
 
-	std::vector<KeyMap_IntStrPair> GetMappableKeys();
+	const KeyMap_IntStrPair *GetMappableKeys(size_t *count);
 
 	// Use to translate input mappings to and from PSP buttons. You should have already translated
 	// your platform's keys to InputMapping keys.

UI/ControlMappingScreen.cpp

@@ -274,7 +274,8 @@ void ControlMappingScreen::CreateViews() {
 	root_->Add(leftColumn);
 	root_->Add(rightScroll_);
 
-	std::vector<KeyMap::KeyMap_IntStrPair> mappableKeys = KeyMap::GetMappableKeys();
+	size_t numMappableKeys = 0;
+	const KeyMap::KeyMap_IntStrPair *mappableKeys = KeyMap::GetMappableKeys(&numMappableKeys);
 
 	struct Cat {
 		const char *catName;
@@ -291,7 +292,7 @@ void ControlMappingScreen::CreateViews() {
 
 	int curCat = -1;
 	CollapsibleSection *curSection = nullptr;
-	for (size_t i = 0; i < mappableKeys.size(); i++) {
+	for (size_t i = 0; i < numMappableKeys; i++) {
 		if (curCat < (int)ARRAY_SIZE(cats) && mappableKeys[i].key == cats[curCat + 1].firstKey) {
 			if (curCat >= 0 && !cats[curCat].openByDefault) {
 				curSection->SetOpen(false);