refactor libcrypto initialisation

Don't call OpenSSL_add_all_algorithms() unless OpenSSL actually
supports it.

Move all libcrypto initialisation to a single function, and call that
from seed_rng() that is called early in each tool's main().

Prompted by patch from Rosen Penev

1 files changed, 2 insertions, 0 deletions

diff --git a/sftp.c b/sftp.c
index ed95cf81..f886b330 100644
--- a/sftp.c
+++ b/sftp.c
@@ -2367,6 +2367,8 @@ main(int argc, char **argv)
 	sanitise_stdfd();
 	msetlocale();
 
+	seed_rng();
+
 	__progname = ssh_get_progname(argv[0]);
 	memset(&args, '\0', sizeof(args));
 	args.list = NULL;