pidgin/pidgin

Fix an out of bounds write in purple_markup_linkify.
release-2.x.y
2021-07-08, Gary Kramlich
71df0a528a5a
Fix an out of bounds write in purple_markup_linkify.

This was found by Thomas Roth , Dominik Maier
, and Fabian Freyer .

Testing Done:
Compiled and ran the `purple_markup_linkify_fuzzer` from the google oss-fuzz project to verify the fix.

Reviewed at https://reviews.imfreedom.org/r/781/
/** @page gtklog-signals GtkLog Signals
@signals
@signal log-displaying
@endsignals
@see gtklog.h
<hr>
@signaldef log-displaying
@signalproto
void (*log_displaying)(PidginLogViewer *viewer, PurpleLog *log);
@endsignalproto
@signaldesc
Emitted when a log is being displayed.
@param viewer The log viewer
@param log The log being displayed
@endsignaldef
*/
// vim: syntax=c.doxygen tw=75 et