r.region: Vect_get_map_box() requires level 2 (#1404)

* r.region: Vect_get_map_box() requires level 2

* Use Vect_get_map_box1() instead

* Revert non-working commit

lib/vector/Vlib/box.c

@@ -395,12 +395,12 @@ int Vect_get_map_box(const struct Map_info *Map, struct bound_box *Box)
 {
     const struct Plus_head *Plus;
 
+    if (Vect_level(Map) < 2)
+      return 0;
+
     Plus = &(Map->plus);
     Vect_box_copy(Box, &(Plus->box));
 
-    if (Vect_level(Map) < 2)
-      return 0;
-    
     return 1;
 }
 

raster/r.region/main.c

@@ -177,7 +177,7 @@ int main(int argc, char *argv[])
 	if (Vect_open_old(&Map, name, "") != 1)
 	    G_fatal_error(_("Unable to open vector map <%s>"), name);
 
-	Vect_get_map_box(&Map, &box);
+	Vect_get_map_box1(&Map, &box);
 	window.north = box.N;
 	window.south = box.S;
 	window.west = box.W;