Ticket #2390: file list format of panel is intialized incorrectly

...after switch panel back from quick view or info mode to file list one.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

src/filemanager/layout.c

@@ -1060,10 +1060,15 @@ set_display_type (int num, panel_view_mode_t type)
 
     if (type == view_listing)
     {
+        WPanel *panel = (WPanel *) new_widget;
+
         if (num == 0)
-            left_panel = (WPanel *) new_widget;
+            left_panel = panel;
         else
-            right_panel = (WPanel *) new_widget;
+            right_panel = panel;
+
+        /* forced update format after set new sizes */
+        set_panel_formats (panel);
     }
 
     if (type == view_tree)

src/filemanager/panel.c

@@ -3451,6 +3451,12 @@ panel_update_cols (Widget * widget, int frame_size)
 {
     int cols, origin;
 
+    /* don't touch panel if it is not in dialog yet */
+    /* if panel is not in dialog it is not in widgets list
+       and cannot be compared with get_panel_widget() result */
+    if (widget->owner == NULL)
+        return;
+
     if (horizontal_split)
     {
         widget->cols = COLS;