Fix cursor URL dump.
Fix cursor URL dump.

svn path=/trunk/libcss/; revision=12705

servo/libcss,zhuyadong/libcss,servo/libcss,zhuyadong/libcss,prepare/netsurf_libcss,servo/libcss,prepare/netsurf_libcss,zhuyadong/libcss,prepare/netsurf_libcss