1.0.0 rc1 Crashes with URL on Mac OS X (Intel)

On Mac OS X (Intel), entering an RTSP URL in the GUI's all-new "Open Network..." dialog crashes in the latest 1.0.0 rc1 nightly build (May 10)--no video is ever displayed.

FWIW: The same exact URL works just fine in 0.9.9 release.

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