pidgin/pidgin

Mark purple_media_error as printf-like

20 months ago, Elliott Sales de Andrade
114cb45a1309
Mark purple_media_error as printf-like

Though nothing uses it anyway.

Testing Done:
Compiled.

Reviewed at https://reviews.imfreedom.org/r/1856/
subdir('disco')
subdir('gestures')
subdir('gtkbuddynote')
subdir('iconaway')
subdir('notify')
subdir('spellchk')
subdir('transparency')
if enable_unity
subdir('unity')
endif
subdir('xmppconsole')