fix: wrong default type for metadata container

Author: chaen

src/DIRAC/DataManagementSystem/Client/ConsistencyInspector.py

@@ -727,7 +727,7 @@ def _getCatalogReplicas(self, lfns):
 
     def _getCatalogMetadata(self, lfns):
         """Obtain the file metadata from the catalog while checking they exist"""
-        allMetadata = []
+        allMetadata = {}
         missingCatalogFiles = []
         zeroSizeFiles = []