patch 9.1.0847: tests: test_popupwin fails because of updated help file

Problem:  tests: test_popupwin fails because of updated main help file
Solution: normalize Last Change header in test_popup_setbuf screendumps

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index a1b7586..fe1902e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    847,
+/**/
     846,
 /**/
     845,