osxvideosink: Fix resizing the Cocoa window on receiving new caps
osxvideosink: Fix resizing the Cocoa window on receiving new caps

Fixes bug #689732.

Distrotech/gst-plugins-good,Distrotech/gst-plugins-good,Distrotech/gst-plugins-good,Distrotech/gst-plugins-good,Distrotech/gst-plugins-good