patch 9.0.1582: :stopinsert may not work in a popup close handler

Problem:    :stopinsert may not work in a popup close handler. (Ben Jackson)
Solution:   Restore stop_insert_mode when appropriate. (closes #12452,
            closes #12434)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1582,
 /**/
     1581,
 /**/