pidgin/pidgin

Correctly free parse tags at end of purple_html_to_xhtml.
release-2.x.y
2021-09-13, Elliott Sales de Andrade
c8e2ffe9b4d0
Correctly free parse tags at end of purple_html_to_xhtml.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34996

Testing Done:
Ran the test case from the bug against `fuzz_html_to_xhtml`

Reviewed at https://reviews.imfreedom.org/r/913/
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