Fix: Initialize totalCost to 0.0 instead of NAN to resolve Codacy warning

Author: Mohit242-bit

src/trsp/trspHandler.cpp

@@ -232,7 +232,7 @@ void TrspHandler::explore(
         int64_t cur_node,
         const EdgeInfo cur_edge,
         bool isStart) {
-    double totalCost = NAN;
+    double totalCost = 0.0;
 
     auto vecIndex = cur_edge.get_idx(isStart);