fix crash in remeshUnrecoveredEdges

Mesh/meshGFace.cpp

@@ -139,6 +139,9 @@ static void remeshUnrecoveredEdges(std::map<MVertex*, BDS_Point*> &recoverMapInv
           newLines.push_back(itr->ge->lines[i]);
         }
       }
+      else {
+        newLines.push_back(itr->ge->lines[i]);
+      }
     }
 
     itr->ge->lines = newLines;