Fix uninitialized variable in Provisioning40CastRoundTrip

- Initialize allowed_schemes_ since it is used by CreateDefaultResponse.
- Issue was detected by Coverity.

Change-Id: I368c4773f6316b65196aaa39e23e70717299c570

libwvdrmengine/oemcrypto/test/oec_session_util.h

@@ -337,8 +337,8 @@ class Provisioning40RoundTrip
 
   // Not used. Use Load*CertResponse() below to load OEM/DRM response
   // respectively.
-  void CreateDefaultResponse() override{};
-  void EncryptAndSignResponse() override{};
+  void CreateDefaultResponse() override {};
+  void EncryptAndSignResponse() override {};
   OEMCryptoResult LoadResponse(Session* session) override {
     return OEMCrypto_ERROR_NOT_IMPLEMENTED;
   }
@@ -383,7 +383,9 @@ class Provisioning40CastRoundTrip
  public:
   Provisioning40CastRoundTrip(Session* session,
                               const std::vector<uint8_t>& encoded_rsa_key)
-      : RoundTrip(session), encryptor_(),
+      : RoundTrip(session),
+        allowed_schemes_(kSign_RSASSA_PSS),
+        encryptor_(),
         encoded_rsa_key_(encoded_rsa_key) {}
 
   void PrepareSession();
@@ -393,7 +395,8 @@ class Provisioning40CastRoundTrip
   void EncryptAndSignResponse() override;
   OEMCryptoResult LoadResponse() override { return LoadResponse(session_); }
   OEMCryptoResult LoadResponse(Session* session) override;
-  OEMCryptoResult LoadResponseNoRetry(Session* session, size_t* wrapped_key_length) ;
+  OEMCryptoResult LoadResponseNoRetry(Session* session,
+                                      size_t* wrapped_key_length);
 
   // Returned
   const std::vector<uint8_t>& wrapped_drm_key() { return wrapped_drm_key_; }