.github/lint: Fix export syntax.

.github/workflows/lint.yml

@@ -1,8 +1,8 @@
 name: Lint
 'on':
-  push:
-    branches:
-      - master
+#  push:
+#    branches:
+#      - master
   pull_request:
     branches:
       - master
@@ -28,5 +28,5 @@ jobs:
           wget https://github.com/waddlesplash/haiku-licenses/archive/master.zip && unzip master.zip
       - name: 'Lint new recipes'
         run: |
-          "PATH=$PATH:../haikuporter" && export PATH
+          export "PATH=$PATH:../haikuporter"
           ./lint-new-recipes.sh --config=haikuports.conf --licenses=haiku-licenses-master