Code cleanup: Make JsepSessionDescription::Initialize take std::unique_ptr

Bug: none
Change-Id: I5e03ff6a6f16bd2e67fa4830e218b510b702d1d4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132321
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27577}
diff --git a/pc/webrtc_sdp.cc b/pc/webrtc_sdp.cc
index a119503..b524a75 100644
--- a/pc/webrtc_sdp.cc
+++ b/pc/webrtc_sdp.cc
@@ -998,7 +998,7 @@
     return false;
   }
 
-  jdesc->Initialize(desc.release(), session_id, session_version);
+  jdesc->Initialize(std::move(desc), session_id, session_version);
 
   for (const auto& candidate : candidates) {
     jdesc->AddCandidate(candidate.get());