fixed a bug that caused navigation not to stop

lib/Navigation/navigation.cpp

@@ -128,7 +128,7 @@ bool Navigation::getCourseCorrection(CourseCorrection& correction) {
         return false;
 
     // Check if I need a new Point
-    if (distance < MIN_DISTANCE_TO_REACH_POINT && !this->preventNextPoint) {
+    if (distance < MIN_DISTANCE_TO_REACH_POINT && this->preventNextPoint == false) {
         if (!this->nextPoint()) {
             this->navigationFinished = true;
             this->navigationStarted = false;
@@ -199,7 +199,7 @@ bool Navigation::nextPoint() {
 }
 
 bool Navigation::setTargetPoint(Point target) {
-    if (target.isValid()) {
+    if (target.isInit()) {
         this->targetPoint = target;
         return true;
     }