updated for version 7.3.306 Problem: When closing a window there is a chance that deleting a scrollbar triggers a GUI resize, which uses the window while it is not in a valid state. Solution: Set the buffer pointer to NULL to be able to detect the invalid situation. Fix a few places that used the buffer pointer incorrectly.

--- a/src/version.c
+++ b/src/version.c
@@ -710,6 +710,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    306,
+/**/
     305,
 /**/
     304,