Fix for segfault when window size is too small by Andreas Amann <andreas.amann@tyndall.ie>

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4256 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

 GNU nano 2.1.1 - 2008.04.01
 
+2008-05-31 Chris Allegretta <chrisa@asty.org>
+	* Fix for seg fault when window size too small, by 
+          Andreas Amann <andreas.amann@tyndall.ie>
+
 2008-05-31 Chris Allegretta <chrisa@asty.org>
 	* Added the following contributed files, by owner:
 	  Donnie Berkholz <dberkholz@gentoo.org>

src/nano.c

@@ -611,7 +611,7 @@ void die(const char *msg, ...)
     va_end(ap);
 
     /* Save the current file buffer if it's been modified. */
-    if (openfile->modified) {
+    if (openfile && openfile->modified) {
 	/* If we've partitioned the filestruct, unpartition it now. */
 	if (filepart != NULL)
 	    unpartition_filestruct(&filepart);