[Xcb] Problem with dock windows and libxcb-icccm

[Arnaud Fontaine]

Hi,

I  had  a  quick  look  at  the  code  and  found  a  similar  issue  in
xcb_get_text_property_reply(), despite being  less important, it is also
clearly   a   bug   because    if   the   property   is   not   present,
xcb_get_text_property_reply() would happily returns 1.

The patch is available there (indeed Xlib performs the same check...):
http://www.mini-dweeb.org/~arnau/coding/patches/0001-The-reply-type-could-be-XCB_NONE-if-the-property-is-.patch

I  will commit it  to the  xcb/util Git  repository if  nobody complains
about it ;).

Cheers,
Arnaud