apply patch from DB: in write_file(), if we've tried to write to an

unwritable file and we're not prepending, tempname is NULL when it's
passed to unlink(); this can cause problems if unlink() can't handle
NULL, so don't call it in that case


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2012 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -109,6 +109,11 @@ CVS code -
   do_writeout_void()
 	- Call display_main_list(), for consistency with
 	  do_insertfile_void(). (DLR)
+  write_file()
+	- If we've tried to write to an unwritable file and we're not
+	  prepending, tempname is NULL when it's passed to unlink().
+	  This can cause problems if unlink() can't handle NULL, so
+	  don't call it in that case. (David Benbennick)
   write_marked()
 	- Remove check for MARK_ISSET's not being set. (DLR)
   open_prevfile(), open_nextfile()

src/files.c

@@ -1602,6 +1602,8 @@ int write_file(const char *name, int tmp, int append, int nonamechange)
     /* First, just give up if we couldn't even open the file. */
     if (fd == -1) {
 	statusbar(_("Error writing %s: %s"), realname, strerror(errno));
+	/* tempname has been set only if we're prepending. */
+	if (tempname != NULL)
 	    unlink(tempname);
 	goto cleanup_and_exit;
     }