Fix landscape mode
Fix landscape mode

Use bounds instead of frame to calculate width of the buttons. This caused the control to be the wrong size in landscape mode.

CQXfly/DZNSegmentedControl,CQXfly/DZNSegmentedControl,hoanganh6491/DZNSegmentedControl,smallmuou/DZNSegmentedControl,xhacker/DZNSegmentedControl,gtranchedone/DZNSegmentedControl,smallmuou/DZNSegmentedControl,bellchen/DZNSegmentedControl,xhacker/DZNSegmentedControl,gtranchedone/DZNSegmentedControl,hjanuschka/DZNSegmentedControl,gtranchedone/DZNSegmentedControl,xhacker/DZNSegmentedControl,dzenbot/DZNSegmentedControl,perrystreetsoftware/DZNSegmentedControl,hjanuschka/DZNSegmentedControl,hoanganh6491/DZNSegmentedControl,jonesgithub/DZNSegmentedControl,sprylogics/DZNSegmentedControl,jonesgithub/DZNSegmentedControl,hoanganh6491/DZNSegmentedControl,jonesgithub/DZNSegmentedControl,smallmuou/DZNSegmentedControl,hjanuschka/DZNSegmentedControl,CQXfly/DZNSegmentedControl