RFR: 8252107: Media pipeline initializtion can crash if audio or video bin…

[Alexander Matveev]

https://bugs.openjdk.java.net/browse/JDK-8252107

- Fixed by checking return value of audio/video bin state change and stopping pipeline initialization if error occurred.

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Commit messages:
 - 8252107: Media pipeline initializtion can crash if audio or video bin state change fails

Changes: https://git.openjdk.java.net/jfx/pull/285/files
 Webrev: https://webrevs.openjdk.java.net/jfx/285/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252107
  Stats: 27 lines in 1 file changed: 24 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jfx/pull/285.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/285/head:pull/285

PR: https://git.openjdk.java.net/jfx/pull/285