xbps-src/show: resolve virtual dependencies correctly.

common/xbps-src/shutils/show.sh

@@ -63,8 +63,12 @@ show_pkg_build_deps() {
     # build time deps
     for f in ${host_build_depends} ${build_depends} ${run_depends}; do
         # ignore virtual deps
-        if [ "${f%\?*}" = "virtual" ]; then
-            continue
+        local _rpkg="${f%\?*}"
+        local _vpkg="${f#*\?}"
+
+        # ignore virtual dependencies
+        if [ "${_rpkg}" != "${_vpkg}" ]; then
+            f="${_vpkg}"
         fi
         unset found
         # check for subpkgs