smooth-dl.py: use more specific exception when looking for the Clip element

diff --git a/smooth-dl.py b/smooth-dl.py
index 9530392..85a0d2e 100755 (executable)
--- a/smooth-dl.py
+++ b/smooth-dl.py
@@ -136,7 +136,7 @@ def get_manifest(url, dest_dir=tempfile.gettempdir()):
         # if some intermediate client Manifest is used, like in Rai Replay
         clip = manifest.find("Clip")
         manifest_url = clip.attrib["Url"]
-    except:
+    except AttributeError:
         pass
 
     manifest_pattern = re.compile("/manifest$", re.IGNORECASE)