PVS-Studio warning V614 for VirtualBox

static int suplibOsStopService(void)
{
  /* Assume it didn't exist, so we'll create the service. */
  int  rc;
  SC_HANDLE  hSMgr = OpenSCManager(....);
  ....
  if (hSMgr)
  {
    ....
    rc = VINF_SUCCESS;
    ....
  }
  return rc;
}

This suspicious code was found in VirtualBox project by PVS-Studio static code analyzer.
Warning message is:
V614 Potentially uninitialized variable 'rc' used. suplib-win.cpp 367

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