patch 9.1.1200: cmdline pum not cleared for input() completion

Problem:  Cmdline pum not cleared for input() completion.
Solution: Temporary reset RedrawingDisabled in cmdline_pum_cleanup(),
          like what is done in wildmenu_cleanup() (zeertzjq).

fixes: #16874
closes: #16876

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/cmdexpand.c b/src/cmdexpand.c
index 597f78d..d218277 100644
--- a/src/cmdexpand.c
+++ b/src/cmdexpand.c
@@ -419,10 +419,15 @@
  * items and refresh the screen.
  */
     void
-cmdline_pum_remove(void)
+cmdline_pum_remove(cmdline_info_T *cclp UNUSED)
 {
     int save_p_lz = p_lz;
     int	save_KeyTyped = KeyTyped;
+#ifdef FEAT_EVAL
+    int	save_RedrawingDisabled = RedrawingDisabled;
+    if (cclp->input_fn)
+	RedrawingDisabled = 0;
+#endif
 
     pum_undisplay();
     VIM_CLEAR(compl_match_array);
@@ -434,12 +439,16 @@
     // When a function is called (e.g. for 'foldtext') KeyTyped might be reset
     // as a side effect.
     KeyTyped = save_KeyTyped;
+#ifdef FEAT_EVAL
+    if (cclp->input_fn)
+	RedrawingDisabled = save_RedrawingDisabled;
+#endif
 }
 
     void
 cmdline_pum_cleanup(cmdline_info_T *cclp)
 {
-    cmdline_pum_remove();
+    cmdline_pum_remove(cclp);
     wildmenu_cleanup(cclp);
 }
 
@@ -1022,7 +1031,7 @@
 
 	// The entries from xp_files may be used in the PUM, remove it.
 	if (compl_match_array != NULL)
-	    cmdline_pum_remove();
+	    cmdline_pum_remove(get_cmdline_info());
     }
     xp->xp_selected = 0;