Vianney changed the name of the 'alert-info' field to 'alert_info'...

but he also made the change in the name of the SIP header !
This commit reverts this mistake.

asterisk_click2dial/asterisk_click2dial.py

@@ -236,7 +236,7 @@ class asterisk_server(osv.osv):
             sock.send('Exten: '+str(ast_number)+'\r\n')
             sock.send('Context: '+str(ast_server.context)+'\r\n')
             if not ast_server.alert_info and user.asterisk_chan_type == 'SIP':
-                sock.send('Variable: SIPAddHeader=Alert_Info: '+str(ast_server.alert_info)+'\r\n')
+                sock.send('Variable: SIPAddHeader=Alert-Info: '+str(ast_server.alert_info)+'\r\n')
             sock.send('Priority: '+str(ast_server.extension_priority)+'\r\n\r\n')
             sock.send('Action: Logoff\r\n\r\n')
             sock.close()