patch 8.1.1902: cannot have an info popup without a border

Problem:    Cannot have an info popup without a border.
Solution:   Add the "border" item to 'completepopup'.

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1902,
 /**/
     1901,
 /**/