Fix non-existent user handling in do_my/get_user_projpkgs_request_list

This fixes the issue reported in PR #227.

osc/commandline.py

@@ -6897,9 +6897,9 @@ Please submit there instead, or use --nodevelproject to force direct submission.
                     print("")
                 return
             except HTTPError as e:
-                if e.code == 400:
-                    # skip it ... try again with old style below
-                    pass
+                if e.code != 400:
+                    raise e
+                # skip it ... try again with old style below
 
         res = get_user_projpkgs(apiurl, user, role_filter, exclude_projects,
                                 'project' in what, 'package' in what,

osc/core.py

@@ -4321,6 +4321,8 @@ def get_user_projpkgs_request_list(apiurl, user, req_state=('new', 'review', ),
         for i in res['package_id'].findall('package'):
             if not i.get('project') in projects:
                 projpkgs.setdefault(i.get('project'), []).append(i.get('name'))
+        if not projpkgs:
+            return []
     xpath = ''
     for prj, pacs in projpkgs.items():
         if not len(pacs):