src/share/classes/com/sun/tools/doclets/internal/toolkit/util/SourceToHTMLConverter.java
convertclass creates a LineReader, but never closes it, which is considered bad juju
and can lead to file descriptor exhaustion.

All streams/readers/writers should be closed in a finally block when no longer needed.

There are probably other such bugs in the JDK.

This bug is not known to cause any user-visible effects.