patch 9.0.0236: popup menu not removed when 'wildmenu' reset while visible

Problem:    Popup menu not removed when 'wildmenu' reset while it is visible.
Solution:   Do not check p_wmnu, only pum_visible(). (closes #10953)
diff --git a/src/cmdexpand.c b/src/cmdexpand.c
index fb329a5..cdf8395 100644
--- a/src/cmdexpand.c
+++ b/src/cmdexpand.c
@@ -367,7 +367,7 @@
  */
 int cmdline_pum_active(void)
 {
-    return p_wmnu && pum_visible() && compl_match_array != NULL;
+    return pum_visible() && compl_match_array != NULL;
 }
 
 /*