Fix QueryKeyControl Unit Test

Merge from widevine repo of http://go/wvgerrit/14720

The QueryKeyControl test expects an error message that the output
buffer is too small.  However, it also gives a bad key id.  Some
devices were correctly returning key not found.  This corrects the key
id length so that the only error is that the buffer is too small.

bug: 21881768
Change-Id: I96f59ede42eeddc9849fbac1e52acecdb562df08

libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp

@@ -2285,7 +2285,7 @@ TEST_F(OEMCryptoSessionTests, QueryKeyControl) {
   size_t size = sizeof(block) - 1;
   OEMCryptoResult sts = OEMCrypto_QueryKeyControl(
       s.session_id(), s.license().keys[0].key_id,
-      sizeof(s.license().keys[0].key_id), reinterpret_cast<uint8_t*>(&block),
+      s.license().keys[0].key_id_length, reinterpret_cast<uint8_t*>(&block),
       &size);
   if (sts == OEMCrypto_ERROR_NOT_IMPLEMENTED) {
     return;