Fixed invalid return from GetSimdTypeString

Fixed invalid return from GetSimdTypeString

IDEHelper/Compiler/BfIRCodeGen.cpp

@@ -4981,7 +4981,7 @@ void BfIRCodeGen::SetActiveFunctionSimdType(BfIRSimdType type)
 		mFunctionsUsingSimd[mActiveFunction] = type;
 }
 
-const StringImpl& BfIRCodeGen::GetSimdTypeString(BfIRSimdType type)
+String BfIRCodeGen::GetSimdTypeString(BfIRSimdType type)
 {
 	switch (type)
 	{

IDEHelper/Compiler/BfIRCodeGen.h

@@ -234,7 +234,7 @@ public:
 	void SetConfigConst(int idx, int value) override;
 
 	void SetActiveFunctionSimdType(BfIRSimdType type);
-	const StringImpl& GetSimdTypeString(BfIRSimdType type);
+	String GetSimdTypeString(BfIRSimdType type);
 	BfIRSimdType GetSimdTypeFromFunction(llvm::Function* function);
 
 	llvm::Value* GetLLVMValue(int streamId);