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/scp.c b/scp.c
index 4f3fdcd3d..eb17c3416 100644
--- a/scp.c
+++ b/scp.c
@@ -400,6 +400,8 @@ main(int argc, char **argv)
         /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
         sanitise_stdfd();
 
+        seed_rng();
+
         msetlocale();
 
         /* Copy argv, because we modify it */