(svn r26121) -Codechange: add some asserts after dynamic casts to show they shouldn't return NULL ever

src/smallmap_gui.cpp

@@ -1644,6 +1644,7 @@ public:
 		bar->SetupSmallestSize(w, init_array);
 
 		this->smallmap_window = dynamic_cast<SmallMapWindow *>(w);
+		assert(this->smallmap_window != NULL);
 		this->smallest_x = max(display->smallest_x, bar->smallest_x + smallmap_window->GetMinLegendWidth());
 		this->smallest_y = display->smallest_y + max(bar->smallest_y, smallmap_window->GetLegendHeight(smallmap_window->min_number_of_columns));
 		this->fill_x = max(display->fill_x, bar->fill_x);