Fix a leak.
Fix a leak.

colorSpace is allocated and released, but never used.  Instead, a separate call of "CGColorSpaceCreateDeviceRGB()" is used as an argument to "CGBitmapContextCreate" and never released.

This one line change fixes the leak.
cuong-nguyen-ta/UIImage-Categories,jimjeffers/UIImage-Categories,mbcharbonneau/UIImage-Categories,Empora/UIImage-Categories