6881: latin_american broken for partial families

svn: r23192

gramps/gui/editors/editfamily.py

@@ -298,8 +298,10 @@ class ChildEmbedList(EmbeddedList):
                 return name
             if not father:
                 preset_name(mother, name)
+                return name
             if not mother:
                 preset_name(father, name)
+                return name
             #we take first surname, and keep that
             mothername = Name()
             preset_name(mother, mothername)