readd removed line

Signed-off-by: stevedan <[email protected]>

nav2_smac_planner/src/a_star.cpp

@@ -291,6 +291,7 @@ bool AStarAlgorithm<NodeT>::areInputsValid()
   if (!_start || _goalsSet.empty()) {
     throw std::runtime_error("Failed to compute path, no valid start or goal given.");
   }
+
   // Check if ending point is valid
   if (getToleranceHeuristic() < 0.001) {
     // if a node is not valid, prune it from the goals set