nrpe-4.1.3 fails to compile without ssl support

[dicksnippe]

Hello,

compiling nrpe-4.1.3 without ssl support (i.e. configure --disable-ssl) fails for nrpe-4.1.3:

In file included from ./nrpe.c:44:
../include/nrpe-ssl.h:47:50: error: unknown type name 'X509_STORE_CTX'
   47 | int ssl_verify_callback_common(int preverify_ok, X509_STORE_CTX * ctx, int is_invalid);
      |                                                  ^~~~~~~~~~~~~~
make[1]: *** [Makefile:50: nrpe] Error 1

And even if this were patched, e.g. by protecting ssl_verify_callback_common in include/nrpe-ssl.h with something like #ifdef HAVE_SSL the compile fails somewhere down the line.

This was not yet the case in nrpe-4.1.1 (don't know about nrpe-4.1.2, sorry)

kind regards,