fix windows compilation, better cmake output

Gabriele Contini

2019-12-14 e3e83c70085d9a9c82b643b46d918fe3a2d21e03

 src/library/os/windows/signature_verifier.cpp

@@ -43,13 +43,6 @@
} PUBKEY_BLOB, *P_PUBKEY_BLOB;
#pragma pack(pop)

static BCRYPT_ALG_HANDLE openSignatureProvider() {
   DWORD status;
   BCRYPT_ALG_HANDLE hSignAlg = nullptr;

   return hSignAlg;
}

static BCRYPT_ALG_HANDLE openHashProvider() {
   DWORD status;
   BCRYPT_ALG_HANDLE hHashAlg = nullptr;