fixed command line to better handle detected but unidentified faces in Photos 5

osxphotos/cmd_line.py

@@ -94,6 +94,15 @@ def info(cli_obj):
     info["albums"] = albums
 
     persons = pdb.persons_as_dict()
+    # handle empty person names (added by Photos 5.0+ when face detected but not identified)
+    noperson = "UNKNOWN"
+    if "" in persons:
+        if noperson in persons:
+            persons[noperson].append(persons[""])
+        else:
+            persons[noperson] = persons[""]
+        persons.pop("", None)
+
     info["persons_count"] = len(persons)
     info["persons"] = persons