Appease ancient compilers
Appease ancient compilers

svn path=/trunk/libcss/; revision=12765

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