message: Destroy previous offer instead of leaking it in PeerConnectionInterfaceTest.ExtmapAllowMixedIsConfigurable
  Cr-Commit-Position: refs/heads/master@{#33071}
diff: @@ -3908,7 +3908,7 @@ TEST_P(PeerConnectionInterfaceTest, ExtmapAllowMixedIsConfigurable) {
  // Possible to set to false.
  config.offer_extmap_allow_mixed = false;
  CreatePeerConnection(config);
  - offer.release();
  + offer = nullptr;
  ASSERT_TRUE(DoCreateOffer(&offer, nullptr));
  EXPECT_FALSE(offer->description()->extmap_allow_mixed());
  }
  