[OpenSIPS-Devel] [OpenSIPS/opensips] f8b50f: prometheus: make sure the stat's name is not changed

[Răzvan Crainea]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: f8b50fafd92bbb6e585830ec7f1b8814e147f075
      https://github.com/OpenSIPS/opensips/commit/f8b50fafd92bbb6e585830ec7f1b8814e147f075
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2021-05-18 (Tue, 18 May 2021)

  Changed paths:
    M modules/prometheus/prometheus.c

  Log Message:
  -----------
  prometheus: make sure the stat's name is not changed

if the stat starts with a number and there's nothing else to be
prefixed, append a `_` before the stat's name