Fixed polyline merge crash, when picked object is not a poly line

closes #1376



git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@16071 383ad7c9-94d9-4d36-a494-682f7c89f535

PolyLinePlugin.cc

@@ -993,7 +993,7 @@ me_merge( QMouseEvent* _event )
       if (PluginFunctions::getPickedObject(node_idx, obj)) {
         // is picked object polyline?
         PolyLineObject* cur_pol = PluginFunctions::polyLineObject(obj);
-        if (cur_pol)
+        if (cur_pol) {
 
           // Check if we got a line segment or a vertex
           if ( target_idx >= cur_pol->line()->n_vertices() )
@@ -1013,6 +1013,8 @@ me_merge( QMouseEvent* _event )
             move_point_ref_ = &(cur_pol->line()->point(cur_pol->line()->n_vertices() - 1));
           }
         }
+
+      }
     }
   }