patch 8.2.0834: :drop command in terminal popup causes problems

Problem:    :drop command in terminal popup causes problems.
Solution:   Check for using a popup window. (closes #6151)
diff --git a/src/version.c b/src/version.c
index 44f7f26..24a5767 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    834,
+/**/
     833,
 /**/
     832,