Geometry, Results: Fix HS display whene not associated.

src/View/Geometry/PlotKPZ.py

@@ -191,8 +191,11 @@ class PlotKPZ(PamhyrPlot):
     def draw_profiles_hs(self, reach):
         lhs = filter(
             lambda hs: hs._input_reach.reach is reach,
+            filter(
+                lambda hs: hs._input_reach is not None,
                 self._study.river.hydraulic_structures.lst
             )
+        )
 
         for hs in lhs:
             x = hs.input_kp

src/View/Results/PlotKPC.py

@@ -109,8 +109,11 @@ class PlotKPC(PamhyrPlot):
     def draw_profiles_hs(self, reach):
         lhs = filter(
             lambda hs: hs._input_reach.reach is reach.geometry,
+            filter(
+                lambda hs: hs._input_reach is not None,
                 self.results.study.river.hydraulic_structures.lst
             )
+        )
 
         for hs in lhs:
             x = hs.input_kp