BHS: Fix where profile RK has changed.

src/View/HydraulicStructures/BasicHydraulicStructures/Window.py

@@ -155,7 +155,8 @@ class BasicHydraulicStructuresWindow(PamhyrWindow):
             profiles = reach.reach.get_profiles_from_rk(float(profile_rk))
         else:
             profiles = None
-        if profiles is not None:
+
+        if profiles is not None or len(profiles) != 0:
             profile = profiles[0]
         else:
             profile = None