Use MAX_DATE_LENGTH+1 as length for some date buffers.

Avoid memory corruption by reserving enough bytes on the stack for a
date buffer. Patch by Richard Earnshaw <rearnsha@netbsd.org>.

BP


git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@15409 57a11ea4-9604-0410-9ed3-97b8803252fd

src/register/register-gnome/datecell-gnome.c

@@ -46,7 +46,7 @@
 #include "gnucash-sheet.h"
 
 
-#define DATE_BUF 30
+#define DATE_BUF (MAX_DATE_LENGTH+1)
 
 typedef struct _PopBox
 {