🐛 — Bulk.pl didn't deliver mails if failed to personalize (#1174 followup)

[ldidry]

I encountered a similar issue than #1174, there is a similar fix (untested but I don’t see why it should not work).

Log (split to make it more easily readable):

Jun 24 12:40:13 my_server bulk[2387]: err main::#160 > Sympa::Spindle::spin#83 > 
  Sympa::Spindle::ProcessOutgoing::_twist#285 > Sympa::Message::personalize#1410 > 
  Sympa::Message::_merge_msg#1464 > Sympa::Message::_merge_msg#1522 > 
  Sympa::Message::personalize_text#1620 Failed parsing template: file error - parse error - input text line 1509-1551: unexpected token  […]

[ikedas]

If no objection, I'll merge my PR above.

[ldidry]

No pb for me.