Added a comment referencing bug #812628 so that we know why we added a seemingly redundant if statement.

openlp/plugins/songs/forms/editsongform.py

@@ -362,6 +362,8 @@ class EditSongForm(QtGui.QDialog, Ui_EditSongDialog):
     def onAuthorAddButtonClicked(self):
         item = int(self.authorsComboBox.currentIndex())
         text = unicode(self.authorsComboBox.currentText()).strip(u' \r\n\t')
+        # This if statement is for OS X, which doesn't seem to work well with
+        # the QCompleter autocompletion class. See bug #812628.
         if text in self.authors:
             # Index 0 is a blank string, so add 1
             item = self.authors.index(text) + 1