[gobject-introspection/ebassi/issue-319] fixup! ci: Use modern Meson command line

[Emmanuele Bassi <ebassi src gnome org>]

commit 926aefe2193adfbe5072260835fe08959afe8ae8
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jun 2 12:32:41 2021 +0100

    fixup! ci: Use modern Meson command line

 .gitlab-ci.yml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d823d9b3..d259e8ec 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -52,8 +52,7 @@ fedora-x86_64-meson:
   variables:
     CCACHE_BASEDIR: "${CI_PROJECT_DIR}"
     CCACHE_DIR: "${CI_PROJECT_DIR}/_ccache"
-    CFLAGS: "-Werror"
-    EXTRA_MESON_FLAGS: "-Ddoctool=enabled -Dgtk_doc=true"
+    EXTRA_MESON_FLAGS: "-Ddoctool=enabled -Dgtk_doc=true -Werror=true"
   script:
     - python3 -m pip install --user mako markdown
     - meson setup ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} _build .