pidgin/pidgin

Add underscore in Meson sources lists.

2020-12-29, Elliott Sales de Andrade
16127907763b
Add underscore in Meson sources lists.

Except for zephyr, which will be done in /r/302.

Testing Done:
Compile only.

Reviewed at https://reviews.imfreedom.org/r/312/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "pidgin/pidgin"
REPOSITORY_TYPE = "mercurial"
BRANCH = "default"
LAND_DEST_BRANCH = "default"
LAND_PUSH = False