Simplify return

.github/workflows/linting.yml

@@ -79,4 +79,4 @@ jobs:
       - name: Check blueprint metadata
         id: metadata
         run: |
-          pythontools/validate_metadata.py -v blueprints
+          python tools/validate_metadata.py -v blueprints

tools/validate_metadata.py

@@ -83,10 +83,7 @@ def main(dirs: list[str], verbose: bool) -> int:
       for path, message in errors.items():
         print(f"{path}: {message}")
 
-  if errors:
-    return 1
-
-  return 0
+  return 0 if not errors else 1
 
 
 if __name__ == '__main__':