Fix a possible crash in rootfs_free_cookie(). Thanks to Thierry Delhaise (befree)

for pointing this one.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1002 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/core/fs/rootfs.c

@@ -481,6 +481,7 @@ static status_t
 rootfs_open(fs_cookie _fs, fs_vnode _v, int oflags, file_cookie *_cookie)
 {
 	// allow to open the file, but it can't be done anything with it
+	*_cookie = NULL;	// help rootfs_free_cookie() to knows if a rootfs_cookie should be free() or not!
 	return B_OK;
 }