Update line-count.yml

Author: sbryngelson

.github/workflows/line-count.yml

@@ -21,6 +21,7 @@ jobs:
   sz:
     name: Core MFC Line Difference
     if: needs.file-changes.outputs.checkall == 'true'
+    needs: file-changes
     permissions:
       contents: read
       pull-requests: write