pidgin/pidgin

Fix a possible leak.

2021-03-04, Elliott Sales de Andrade
afc646d2e7cb
Fix a possible leak.

Been failing in scanbuild for a while.

Testing Done:
Compile only. Ran scanbuild again and leak is not reported.

Reviewed at https://reviews.imfreedom.org/r/556/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in