pidgin/pidgin

simple: Fix search for message headers.

2020-05-17, Elliott Sales de Andrade
f38b64939ecb
simple: Fix search for message headers.

The list contains key-value pairs (of `PurpleKeyValuePair` type now, but
`struct siphdrelement` before) so using `g_ascii_strcasecmp` directly
does not work.
[Desktop Entry]
Name=Pidgin
GenericName=Internet Messenger
Comment=Chat over IM. Supports AIM, Google Talk, Jabber/XMPP, and more
Exec=purple3-url-handler %u
TryExec=purple3-url-handler
Icon=pidgin
StartupNotify=false
Terminal=false
NoDisplay=true
Type=Application
Categories=Network;InstantMessaging;RemoteAccess;ConsoleOnly;
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@