Checkmk Werk 15473: ec: Fix crash in parsing syslog

ID: 15473 Title: ec: Fix crash in parsing syslog Component: Event Console Level: 1 Class: Bug fix Version: 2.3.0b1 Previously, parsing of syslog would crash if pid wasn't a number, e.g. "App[-]: message". This can happend if syslog messages are forwarded or processed from some other instance.