BurntSushi/xgb — pull request #19 by snyh (2013-12-30 09:01:34+00:00)
Title: example/randr: check the GetOutputInfo's mode length (virtual head can h...

...ave zero mode)

My PC's xrand output
```
snyh:randr$xrandr
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 32767 x 32767
VGA1 connected primary 1440x900+0+0 (normal left inverted right x axis y axis) 408mm x 255mm
1440x900 59.9*+ 75.0
1280x1024 75.0 60.0
1280x960 60.0
1280x800 59.8
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
```
the virtual1 will cause panic