[svn:fx-trunk] 5806: Fix null pointer reported by the doc team.

Revision: 5806
Author: gauravj@adobe.com
Date: 2009-03-31 10:03:36 -0700 (Tue, 31 Mar 2009)

Log Message:
-----------
Fix null pointer reported by the doc team.

QE Notes: None.
Doc Notes: None.
tests: checkintests, asdoc tests

Modified Paths:
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flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/AsDocUtil.java
flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/asdoc/TopLevelClassesGenerator.java