Don't crash on user with missing realname either

lib/user.py

@@ -10,6 +10,7 @@ FAKE_ACCOUNTS = (
     "$user",
     "embar-",
     "michel_mno",
+    "guinux",
 )
 
 
@@ -17,6 +18,8 @@ class User:
     def parse(self, xml, userid):
         self.userid = userid
         self.realname = xml.find("realname").text
+        if self.realname is None:
+            self.realname = ""
         self.email = xml.find("email").text
         if self.email is None:
             self.email = ""