patch 8.1.1423: popup windows use options from current window and buffer

Problem:    Popup windows use options from current window and buffer.
Solution:   Clear all local options when creating a popup window.
diff --git a/src/version.c b/src/version.c
index 8519fd5..2d70ed5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1423,
+/**/
     1422,
 /**/
     1421,