scripting:lua: clear out entire return value for pointer values

Author: blattersturm

code/components/citizen-scripting-lua/src/LuaScriptRuntime.cpp

@@ -754,12 +754,17 @@ int Lua_InvokeNative(lua_State* L)
 				}
 
 				// push the offset and set the type
+				retvals[numReturnValues] = 0;
+
 				push(&retvals[numReturnValues]);
 				rettypes[numReturnValues] = metaField;
 
 				// increment the counter
 				if (metaField == LuaMetaFields::PointerValueVector)
 				{
+					retvals[numReturnValues + 1] = 0;
+					retvals[numReturnValues + 2] = 0;
+
 					numReturnValues += 3;
 				}
 				else