v.db.select: add missing ->answer (merge from devbr6, https://trac.osgeo.org/grass/changeset/33085)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@33086 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.db.select/main.c

@@ -119,7 +119,7 @@ int main(int argc, char **argv)
 	G_fatal_error(_("Vector map <%s> not found"), map_opt->answer);
     }
 
-    if (!r_flag) {
+    if (!r_flag->answer) {
 	Vect_open_old_head(&Map, map_opt->answer, mapset);
     }
     else {