xbps-query(8): fix a segfault with -Rf if pkg is in repodata but not its binpkg.

bin/xbps-query/show-info-files.c

@@ -308,10 +308,9 @@ repo_show_pkg_files(struct xbps_handle *xhp, const char *pkg)
 	pkgd = xbps_rpool_get_pkg_plist(xhp, pkg, "./files.plist");
 	if (pkgd == NULL) {
                 if (errno != ENOTSUP && errno != ENOENT) {
-			fprintf(stderr, "Unexpected error: %s\n",
-			    strerror(errno));
-			return errno;
+			fprintf(stderr, "Unexpected error: %s\n", strerror(errno));
 		}
+		return errno;
 	}
 
 	return show_pkg_files(pkgd);