[FFmpeg-cvslog] Update missed irc links

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Thu Jun 17 18:37:01 2021 +0200| [c067d20177613e9cf74bcbd2a26e729ef7ababdb] | committer: Michael Niedermayer

Update missed irc links

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c067d20177613e9cf74bcbd2a26e729ef7ababdb
---

 configure               | 2 +-
 doc/writing_filters.txt | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 87c8e85fe6..dbe66bbc4c 100755
--- a/configure
+++ b/configure
@@ -534,7 +534,7 @@ die(){
 
 If you think configure made a mistake, make sure you are using the latest
 version from Git.  If the latest version fails, report the problem to the
-ffmpeg-user at ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
+ffmpeg-user at ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
 EOF
     if disabled logging; then
         cat <<EOF
diff --git a/doc/writing_filters.txt b/doc/writing_filters.txt
index 2e25cbed71..e89d7d1e05 100644
--- a/doc/writing_filters.txt
+++ b/doc/writing_filters.txt
@@ -418,4 +418,4 @@ done:
 
 When all of this is done, you can submit your patch to the ffmpeg-devel
 mailing-list for review.  If you need any help, feel free to come on our IRC
-channel, #ffmpeg-devel on irc.freenode.net.
+channel, #ffmpeg-devel on irc.libera.chat.