opkg: fix the -force_space option

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17611 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/opkg/patches/006-fix_force_space.patch

+--- a/libopkg/opkg_conf.c
++++ b/libopkg/opkg_conf.c
+@@ -252,6 +252,9 @@ int opkg_conf_init(opkg_conf_t *conf, co
+      if (args->force_downgrade) {
+ 	  conf->force_downgrade = 1;
+      }
++     if (args->force_space) {
++	  conf->force_space = 1;
++     }
+      if (args->force_reinstall) {
+ 	  conf->force_reinstall = 1;
+      }