pidgin/pidgin

Fix a few issues with the CredentialProvider code that snuck past review

2020-10-14, Gary Kramlich
569ab1326932
Fix a few issues with the CredentialProvider code that snuck past review

Testing Done:
Compiled and ran unit tests locally. Verified the warnings were gone from the unit test build and verified the warning was gone from the Purple-3.0.gir build.

Reviewed at https://reviews.imfreedom.org/r/168/
[Desktop Entry]
Name=Pidgin 3
GenericName=Internet Messenger
Comment=Chat over IM. Supports AIM, Google Talk, Jabber/XMPP, and more
Exec=pidgin3 %U
Icon=im.pidgin.Pidgin3
StartupNotify=true
Terminal=false
Type=Application
Categories=Network;InstantMessaging;
MimeType=x-scheme-handler/aim;x-scheme-handler/gg;x-scheme-handler/icq;x-scheme-handler/irc;x-scheme-handler/msnim;x-scheme-handler/sip;x-scheme-handler/xmpp;x-scheme-handler/ymsgr
@USES_MM_CHAT_SECTION@