NSSwitch drawRect bug

[Austin Clow]

In NSSwitch.m, the method for drawRect is as follows: 

- (void) drawRect: (NSRect)rect

{

  [[GSTheme theme] drawSwitchInRect: rect

                           forState: _state

                            enabled: [self isEnabled]];

}

I believe it should be 

- (void) drawRect: (NSRect)rect

{

  [[GSTheme theme] drawSwitchInRect: [self bounds]

                           forState: _state

                            enabled: [self isEnabled]];

}

As it is right now, when it redrawing a rect, it will redraw it within rect causing it to draw bigger and smaller depending not he redraw area. I'm not comfortable yet doing pull requests for a library I am largely unfamiliar with. 

I know the drawing method is kinda ugly right now. I am thinking about rewriting it.