Bug#803332: libxcb1: segfaults in xcb_send_request64

[Peter Pöschl <pp2ml.deb0609@nest-ai.de>]

Some more info:

After some (big) package updates the problem went away.
vlc was updated, but libxcb1 and dragonplayer were not:

ii      dragonplayer    4:15.08.2-1
ii      libxcb1:amd64   1.11.1-1
ii      vlc             2.2.1-5+b1

The breeze dependencies are now:
ii      breeze-cursor-theme     		  4:5.4.2-1
ii      breeze-icon-theme       		  4:5.4.2-1
ii      kde-style-breeze        		  4:5.4.2-1
ii      kde-style-breeze-qt4    		  4:5.4.2-1
ii      kwin-style-breeze       		  4:5.4.2-1
ii      libc6:amd64             		  2.19-22
ii      libkf5configcore5:amd64 		  5.15.0-1
ii      libkf5coreaddons5:amd64 		  5.15.0-1
ii      libkf5i18n5:amd64       		  5.15.0-1
ii      libkf5kcmutils5:amd64   		  5.15.0-1
ii      libqt5core5a:amd64      		  5.5.1+dfsg-6
ii      libqt5gui5:amd64        		  5.5.1+dfsg-6
ii      libqt5widgets5:amd64    		  5.5.1+dfsg-6
ii      libstdc++6:amd64        		  5.2.1-23
ii      qml-module-qtquick-controls-styles-breeze 4:5.4.2-1