[gdk-pixbuf] (2 commits) Non-fast-forward update to branch build.fixes

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'build.fixes' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  4fee711... meson.build: Don't use fallback dep for libpng unnecessaril

Commits added to the branch:

  f58d6cc... gif: Escape GIF version in error message (*)
  e2a6f64... meson.build: Don't use fallback dep for libpng unnecessaril

(*) This commit already existed in another branch; no separate mail sent