HydraulicStructures: Fix hydraulic structures plot with missing input section

src/View/HydraulicStructures/PlotRKC.py

@@ -136,13 +136,18 @@ class PlotRKC(PamhyrPlot):
         hs_color = []
         index = self.parent.tableView.selectedIndexes()
         for i, hs in enumerate(lhs):
+            section = hs.input_section
+            if section is None:
+                continue
+
             if i == index[0].row():
-                hs_color.append("blue")
+                color = "blue"
             elif hs.enabled:
-                hs_color.append("red")
+                color = "red"
             else:
-                hs_color.append("darkgrey")
-            x = hs.input_section.rk
+                color = "darkgrey"
+
+            x = section.rk
             if x is not None:
                 a = self.canvas.axes.annotate(
                     " > " + hs.name,
@@ -151,12 +156,13 @@ class PlotRKC(PamhyrPlot):
                     verticalalignment='top',
                     annotation_clip=True,
                     fontsize=9,
-                    color=hs_color[-1],
+                    color=color,
                 )
                 self.anotate_lst.append(a)
                 vx.append(x)
                 vymin.append(min(z_min))
                 vymax.append(max(z_max))
+                hs_color.append(color)
 
         self.hs_vlines = self.canvas.axes.vlines(
             x=vx, ymin=vymin, ymax=vymax,