Comment 2 for bug 1058737

StacktraceTop:
 __assert_fail_base (fmt=0xb6cab6d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0xb7681179 "ret != inval_id", file=0xb76810ea "../../src/xcb_io.c", line=528, function=0xb76811fe "_XAllocID") at assert.c:94
 __GI___assert_fail (assertion=assertion@entry=0xb7681179 "ret != inval_id", file=file@entry=0xb76810ea "../../src/xcb_io.c", line=line@entry=528, function=function@entry=0xb76811fe "_XAllocID") at assert.c:103
 _XAllocID (dpy=0x83fd080) at ../../src/xcb_io.c:528
 XCreatePixmap (dpy=0x83fd080, d=31457285, width=width@entry=80, height=height@entry=80, depth=32) at ../../src/CrPixmap.c:56
 _cairo_xlib_surface_create_similar (abstract_src=0x853c318, content=CAIRO_CONTENT_COLOR_ALPHA, width=80, height=80) at /build/buildd/cairo-1.12.2/src/cairo-xlib-surface.c:306