Backends/GLFW3/Controller: Wrap both sides of if-else with {} equally.

Signed-off-by: Gabriel Ravier <gabravier@gmail.com>

src/Backends/GLFW3/Controller.cpp

@@ -46,10 +46,8 @@ static void JoystickCallback(int joystick_id, int event)
 						axis_neutrals = (float*)malloc(sizeof(float) * total_axes);
 
 						if (axis_neutrals != NULL)
-						{
 							for (int i = 0; i < total_axes; ++i)
 								axis_neutrals[i] = axes[i];
-						}
 						else
 							Backend_PrintError("Couldn't allocate memory for axis");
 					}