MINOR: server: move the use_ssl field out of the ifdef USE_OPENSSL

Having it in the ifdef complicates certain operations which require
additional ifdefs just to access a member which could remain zero in
non-ssl cases. Let's move it out, it will not even increase the
struct size on 64-bit machines due to alignment.
diff --git a/src/server.c b/src/server.c
index 479631c..b58216e 100644
--- a/src/server.c
+++ b/src/server.c
@@ -1072,6 +1072,7 @@
 				goto out;
 			}
 
+			newsrv->use_ssl		= curproxy->defsrv.use_ssl;
 			newsrv->check.use_ssl	= curproxy->defsrv.check.use_ssl;
 			newsrv->check.port	= curproxy->defsrv.check.port;
 			if (newsrv->check.port)
@@ -1096,9 +1097,6 @@
 			newsrv->onmarkedup      = curproxy->defsrv.onmarkedup;
 			newsrv->consecutive_errors_limit
 						= curproxy->defsrv.consecutive_errors_limit;
-#ifdef OPENSSL
-			newsrv->use_ssl		= curproxy->defsrv.use_ssl;
-#endif
 			newsrv->uweight = newsrv->iweight
 						= curproxy->defsrv.iweight;