Silence some compiler warnings.

src/modules/joystick/sdl/Joystick.cpp

@@ -713,7 +713,7 @@ std::vector<float> Joystick::getSensorData(Sensor::SensorType type) const
 		throw love::Exception("\"%s\" gamepad sensor is not enabled", name);
 	}
 
-	if (SDL_GameControllerGetSensorData(controller, SDLSensor::convert(type), data.data(), data.size()) != 0)
+	if (SDL_GameControllerGetSensorData(controller, SDLSensor::convert(type), data.data(), (int) data.size()) != 0)
 	{
 		const char *name = nullptr;
 		SDLSensor::getConstant(type, name);

src/modules/sensor/sdl/Sensor.cpp

@@ -106,7 +106,7 @@ std::vector<float> Sensor::getData(SensorType type)
 
 	std::vector<float> values(3);
 
-	if (SDL_SensorGetData(sensors[type], values.data(), values.size()) != 0)
+	if (SDL_SensorGetData(sensors[type], values.data(), (int) values.size()) != 0)
 	{
 		const char *name = nullptr;
 		getConstant(type, name);

src/modules/sensor/wrap_Sensor.cpp

@@ -75,7 +75,7 @@ static int w_getData(lua_State *L)
 	for (float f: data)
 		lua_pushnumber(L, f);
 
-	return data.size();
+	return (int) data.size();
 }
 
 static int w_getName(lua_State *L)