[7u6] Request for approval for 7184845 - Apps6: menu tree bean in form throws npe in jre 7 while closing

[Denis S. Fokin]

Good day.

I hereby request an approval to a fix for CR 7184845.

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7184845

Webrev:
http://cr.openjdk.java.net/~denis/7184845/webrev/
This fix will be not forward ported into jdk8 because it is a jdk7u 
compatibility issue.

Reviwers:
anthony, serb are reviewers.

Risks:
The change carries minimal risk.

Tests:
AWT jterg regression tests.

Thank you,
    Denis.