[PATCH xrandr] find_mode: Search for the mode closes to the specified rate

[Jeremy Huddleston]

Hey Keith,

clang found an issue in xrandr that I'd like you to review the fix for.  I'm fairly certain this is what you intended.

Thanks,
Jeremy

For reference:
http://people.freedesktop.org/~jeremyhu/analyzer/yuffie/20110509-0000/xrandr/report-gZOzCf.html#EndPath
http://cgit.freedesktop.org/xorg/app/xrandr/commit/?id=d9aeb4a7544ad4a33f6f54bc46bff5cdf231a986

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