Merge branch 'fix-scan-build' into 'master'

ci: Run scan-build in a different build directory

See merge request GNOME/glib!914

.gitlab-ci.yml

@@ -255,13 +255,13 @@ scan-build:
             -Ddtrace=true
             -Dfam=true
             -Dinstalled_tests=true
-            _build
-    - ninja -C _build scan-build
+            _scan_build
+    - ninja -C _scan_build scan-build
   artifacts:
     name: "glib-${CI_JOB_NAME}-${CI_COMMIT_REF_NAME}"
     when: always
     paths:
-      - "_build/meson-logs/scanbuild"
+      - "_scan_build/meson-logs/scanbuild"
 
 pages:
   stage: deploy