pidgin/pidgin

Fix a small typo.

2020-11-02, Elliott Sales de Andrade
4118acc90778
Fix a small typo.

Reviewed at https://reviews.imfreedom.org/r/192/
nullclient = executable('nullclient', 'nullclient.c', 'defines.h',
c_args : ['-DSTANDALONE'],
dependencies : [libpurple_dep, glib])