pidgin/pidgin

Fix an assert in purple_markup_html_to_xhtml
release-2.x.y
2021-09-15, Elliott Sales de Andrade
cb21c7484e4c
Fix an assert in purple_markup_html_to_xhtml

While `g_string_free` is NULL-safe, the assert for passing it in breaks
ossfuzz. This can happen if there is no `src=` in the `img` as expected.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35029

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

Reviewed at https://reviews.imfreedom.org/r/921/
environment:
- REPO=pidgin/pidgin2-docs
- TAG=latest
- REGISTRY=docker.io
- REGISTRY_USERNAME
- REGISTRY_PASSWORD
tasks:
import:
type: docker/import
files: .:.
build:
type: docker/build
dockerfile: Dockerfile.doxygen
tag: ${REGISTRY}/${REPO}:${TAG}
files: .:.
login:
type: docker/login
username: ${REGISTRY_USERNAME}
password: ${REGISTRY_PASSWORD}
server: ${REGISTRY}
logout:
type: docker/logout
server: ${REGISTRY}
push:
type: docker/push
images: ${REGISTRY}/${REPO}:${TAG}
plans:
default:
stages:
- tasks: [import, build]
ci:
stages:
- tasks: [import, build, login, push]
- tasks: [logout]
run: always