ui/map: check NavDestination only if navInstruction is invalid (#29331)

* check NavDestination only if navInstruction is invalid

* Update selfdrive/ui/qt/maps/map.cc

Co-authored-by: Shane Smiskol <shane@smiskol.com>

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Co-authored-by: Shane Smiskol <shane@smiskol.com>
old-commit-hash: 80356b34f1

selfdrive/ui/qt/maps/map.cc

@@ -213,8 +213,7 @@ void MapWindow::updateState(const UIState &s) {
     // - API exception/no internet
     // - route response is empty
     // - any time navd is waiting for recompute_countdown
-    auto dest = coordinate_from_param("NavDestination");
-    routing_problem = !sm.valid("navInstruction") && dest.has_value();
+    routing_problem = !sm.valid("navInstruction") && coordinate_from_param("NavDestination").has_value();
 
     if (sm.valid("navInstruction")) {
       auto i = sm["navInstruction"].getNavInstruction();