patch 9.0.0907: restoring window after WinScrolled may fail

Problem:    Restoring window after WinScrolled may fail.
Solution:   Lock the window layout when triggering WinScrolled.
diff --git a/src/version.c b/src/version.c
index a87a378..588c312 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    907,
+/**/
     906,
 /**/
     905,