bug#50507: New function in Emacs GnuTLS implementation

[Robert Pluim <rpluim@gmail.com>]

>>>>> On Fri, 30 Sep 2022 12:22:16 -0400, Nikolaos Chatzikonstantinou <nchatz314@gmail.com> said:
    Nikolaos>   #if COND
    Nikolaos>   if (something)
    Nikolaos>     foo();
    Nikolaos>   else
    Nikolaos>     bar();
    Nikolaos>   #else
    Nikolaos>   bar();
    Nikolaos>   #endif

    Nikolaos> To be rewritten as

    Nikolaos>   #if COND
    Nikolaos>   if (something)
    Nikolaos>     foo();
    Nikolaos>   else
    Nikolaos>   #endif
    Nikolaos>   bar();

    Nikolaos> Because in this case, I don't trust that kind of code to survive the
    Nikolaos> test of time. Someone may come along and break it by modifying the
    Nikolaos> bar() line, and it might be a sneaky bug. It's not easy to tell.

In the first version thereʼs the risk that one of the calls to 'bar'
will be changed and the other missed.

In the second version thereʼs only one 'bar' to change. If someone
changes the 'bar' code so it doesnʼt compile under COND, thatʼs
immediately obvious.

Robert
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