UBUNTU: SAUCE: AppArmor: Fix off by 2 error in getprocattr mem allocation

BugLink: http://bugs.launchpad.net/bugs/446595

In AppArmor's get procattr interface when a namespace is defined the
allocation is not large enough for <ns_name> + "://" + <profile_name>, so
AppArmor overwrites 2 bytes of memory it has not allocated.

Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>