PVS-Studio warning V627 for nss

#define SSL3_MASTER_SECRET_LENGTH 48

SECStatus
ssl3_ServerHandleSessionTicketXtn(....)
{
  if (buffer_len < sizeof(SSL3_MASTER_SECRET_LENGTH))
    goto no_ticket;
  ....
}

This suspicious code was found in nss project by PVS-Studio static code analyzer.
Warning message is:
V627 Consider inspecting the expression. The argument of sizeof() is the macro which expands to a number. ssl3ext.c 1541

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/