[P] Fix several crashes triggered in one call sequence

MapView/main.py

@@ -106,7 +106,11 @@ class MapViewApp(App):
 
     def map_lat_lon_to_marker(self, lat: float, lon: float) -> MapMarker | None:
         flt = filter(lambda marker: lon == marker.lat and lat == marker.lon, self.pothole_markers + self.bump_markers)
+
+        try:
             return next(flt)
+        except StopIteration as e:
+            return None
 
     def set_pothole_marker(self, point):
         lat, lon = get_lat_lon(point)
@@ -148,15 +152,15 @@ class MapViewApp(App):
 
         clicked_marker = self.map_lat_lon_to_marker(clicked_marker_data.latitude, clicked_marker_data.longitude)
 
+        if clicked_marker == None:
+            return
+
         self.mapview.remove_marker(clicked_marker)
 
-        pothole_index = self.pothole_markers.index(clicked_marker)
-        bump_index = self.bump_markers.index(clicked_marker)
-
-        if pothole_marker >= 0:
-            self.pothole_markers.pop(pothole_index)
-        elif bump_index >= 0:
-            self.bump_markers.pop(bump_index)
+        if clicked_marker in self.pothole_markers:
+            self.pothole_markers.pop(self.pothole_markers.index(clicked_marker))
+        elif clicked_marker in self.bump_markers:
+            self.bump_markers.pop(self.bump_markers.index(clicked_marker))
 
     def on_touch_down(self, widget, touch):
         if touch.button == "right":