patch 9.1.1461: tabpanel: tabpanel vanishes with popup menu

Problem:  tabpanel: tabpanel vanishes with popup menu
Solution: remove pum-related test in tabpanel_leftcol(), refactor a few
          related functions (Hirohito Higashi)

This commit does the following:
- Delete unnecessary pum-related checks in the tabpanel_leftcol()
  function
- remove pum-related check in tabpanel_leftcol()
- The argument of the TPL_LCOL() macro has been deleted.
- The argument of the tabpanel_leftcol() function has been changed
  to void
- The return type of the `win_comp_pos()` function has been changed to
  void

closes: #17549

Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/proto/tabpanel.pro b/src/proto/tabpanel.pro
index 34c3e52..617f802 100644
--- a/src/proto/tabpanel.pro
+++ b/src/proto/tabpanel.pro
@@ -1,6 +1,6 @@
 /* tabpanel.c */
 int tabpanel_width(void);
-int tabpanel_leftcol(win_T *wp);
+int tabpanel_leftcol(void);
 int tabpanelopt_changed(void);
 void draw_tabpanel(void);
 int get_tabpagenr_on_tabpanel(void);
diff --git a/src/proto/window.pro b/src/proto/window.pro
index d92a5af..44e4201 100644
--- a/src/proto/window.pro
+++ b/src/proto/window.pro
@@ -72,7 +72,7 @@
 void shell_new_columns(void);
 void win_size_save(garray_T *gap);
 void win_size_restore(garray_T *gap);
-int win_comp_pos(void);
+void win_comp_pos(void);
 void win_ensure_size(void);
 void win_setheight(int height);
 void win_setheight_win(int height, win_T *win);