Fix wrong SSL reference with version(VibeNoSSL)

[dcarp]

Some SSL API is referenced when compiled with version (VibeNoSSL).

Btw. wouldn't it better to use assert(0, ... ); instead of assert(false, ...);? Only assert(0, ...) is specified to not be thrown away when compiled with -release.

[s-ludwig]

Thanks, merging the fix.

I've always considered using an integer for the assertion condition as sloppy coding style, but you are right that the documentation only mentions assert(0) as a special case (it seems not even assert(0, ...) is mentioned). However, in practice assert(false) has always behaved exactly the same, so that should be fine. But more importantly, I'd strongly discourage using -release for typical vibe.d applications in the first place, as that will also disable bounds checking in most parts of the code, making it potentially vulnerable to buffer overflow attacks.