Add a null check in PackageParser

            }

        }

        if ((flags&PackageManager.GET_SIGNATURES) != 0) {

            if (p.mSignatures != null) {

                int N = p.mSignatures.length;

                if (N > 0) {

                    pi.signatures = new Signature[N];

                    System.arraycopy(p.mSignatures, 0, pi.signatures, 0, N);

                }

            }

        }

        return pi;

    }