add history to equirect import

src/canvas_modes.cpp

@@ -1577,7 +1577,7 @@ void CanvasModeFloodFill::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
         virtual Action* get_redo() override
         {
             auto a = new ActionFloodFill;
-            a->m_direction = (Direction)(1 - (int)m_direction);
+            a->m_direction = reverse_direction();
             a->m_layer = m_layer;
             a->m_snap = m_snap;
             a->m_pos = m_pos;