[Webkit-unassigned] [Bug 215263] New: [MSE][GStreamer] Remove m_sourceBufferPrivateClient checks in SourceBufferPrivateGStreamer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215263

            Bug ID: 215263
           Summary: [MSE][GStreamer] Remove m_sourceBufferPrivateClient
                    checks in SourceBufferPrivateGStreamer
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aboya at igalia.com
                CC: bugs-noreply at webkitgtk.org

m_sourceBufferPrivateClient is only reset to NULL from SourceBuffer's
destructor. At this point SourceBufferPrivateGStreamer is about to
receive its last unref by SourceBuffer and therefore be destroyed.

Similarly, there is no need to check for m_mediaSource being null.
m_mediaSource is only reset when the SourceBuffer is removed, and at
that point SourceBufferPrivate shouldn't receive any calls.

This is a clean-up and doesn't introduce new behavior. Asserts have
been added checking the precondition above.

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