Skip the resource with an empty link

Author: u10313335

repo2docker/contentproviders/ckan.py

@@ -105,6 +105,8 @@ def fetch(self, spec, output_dir, yield_output=False):
 
         for resource in resources:
             file_url = resource["url"]
+            if file_url == "":
+                continue
             fname = file_url.rsplit("/", maxsplit=1)[-1]
             if fname == "":
                 fname = resource["id"]