RFR: CODETOOLS-7902793: Fix IllegalMonitorStateException in JInternalFrameOperatorCloseTest

[Amresh Sahu]

IllegalMonitorStateException has been fixed.

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Commit messages:
 - Update JInternalFrameOperatorCloseTest.java
 - Update JInternalFrameOperatorCloseTest.java
 - Fixed issue CODETOOLS-7902793.

Changes: https://git.openjdk.java.net/jemmy-v2/pull/3/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jemmy-v2&pr=3&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-7902793
  Stats: 6 lines in 1 file changed: 1 ins; 4 del; 1 mod
  Patch: https://git.openjdk.java.net/jemmy-v2/pull/3.diff
  Fetch: git fetch https://git.openjdk.java.net/jemmy-v2 pull/3/head:pull/3

PR: https://git.openjdk.java.net/jemmy-v2/pull/3