patch 9.0.0207: stacktrace not shown when debugging

Problem:    Stacktrace not shown when debugging.
Solution:   Set msg_scroll in msg_source(). (closes #10917)
diff --git a/src/version.c b/src/version.c
index e13374f..1ef5b39 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    207,
+/**/
     206,
 /**/
     205,