edf0d68ea5
According to [X.org docs](http://www.x.org/releases/X11R7.7/doc/compositeproto/compositeproto.txt) regarding NameWindowPixmap: "This pixmap will remain allocated until freed, even if 'window' is unmapped, reconfigured or destroyed. However, 'window' will get a new pixmap allocated each time it is mapped or resized, so this request will need to be reinvoked" So, pixmap needs to be discarded not only on XCB_CONFIGURE_NOTIFY event but on XCB_MAP_NOTIFY event also.