UBUNTU: SAUCE: (no-up) fix: bad unix_addr_fs macro

the unix_addr_fs macro should not check for a leading /, instead it
should be checking for the addr not being an abstract socket addr
(leading \0)

BugLink: http://bugs.launchpad.net/bugs/1390223Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

security/apparmor/include/af_unix.h

@@ -27,7 +27,7 @@
 
 #define unix_addr(A) ((struct sockaddr_un *)(A))
 #define unix_addr_anon(A, L) ((A) && unix_addr_len(L) <= 0)
-#define unix_addr_fs(A, L) (!unix_addr_anon(A, L) && unix_addr(A)->sun_path[0] == '/')
+#define unix_addr_fs(A, L) (!unix_addr_anon(A, L) && !addr_unix_abstract_name(unix_addr(A)->sun_path))
 
 #define UNIX_ANONYMOUS(U) (!unix_sk(U)->addr)
 /* from net/unix/af_unix.c */