[FIX] Prevent TypeError in pem_from field in OpenERP 6.1

[mrsarm]

In OpenERP 6.1, when I'm trying to send a email from a wizard (sale order), this error is launched:

Server Traceback (most recent call last):
  File "/python/openerp-6.1-1/openerp/addons/web/common/http.py", line 592, in send
    result = openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/python/openerp-6.1-1/openerp/netsvc.py", line 360, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/python/openerp-6.1-1/openerp/service/web_services.py", line 572, in dispatch
    res = fn(db, uid, *params)
  File "/python/openerp-6.1-1/openerp/osv/osv.py", line 167, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/python/openerp-6.1-1/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/python/openerp-6.1-1/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/python/openerp-6.1-1/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/python/openerp-6.1-1/extra-addons/poweremail/send_wizard.py", line 187, in send_mail
    mailid = self.save_to_mailbox(cr, uid, ids, context)
  File "/python/openerp-6.1-1/extra-addons/poweremail/send_wizard.py", line 233, in save_to_mailbox
    'pem_from': tools.ustr(accounts['name']) + "<" + tools.ustr(accounts['email_id']) + ">",
TypeError: list indices must be integers, not str

With this fix prevent this error.

[sharoonthomas]

@shalabhaggarwal Can you look into the patch please ?

[RuslansAlistek]

This fix is not correct, because here is problem in type of screen_vals['from'] value, is 'unicode' but must be 'int'.