Fix counter-increment parsing
Fix counter-increment parsing

svn path=/trunk/libcss/; revision=6196

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