Fix for binary policy modules. They do not retain the neverallow source information so we must not assume that source_filename is set. Either need a new binary module format if we want to propagate this information for modular builds or get rid of binary modules. Signed-off-by: Stephen Smalley <[email protected]> Bug: https://code.google.com/p/android/issues/detail?id=73183 (cherry picked from commit d26204e7d0a3be178a97d4920b82007e05a2a632) Change-Id: I88e220816430b57d5cb366f3a1e0c22fc64fffef