Fix broken asyncnet module.

lib/pure/asyncnet.nim

@@ -487,7 +487,7 @@ when defineSsl:
     ## prone to security vulnerabilities.
     socket.isSsl = true
     socket.sslContext = ctx
-    socket.sslHandle = SSLNew(SSLCTX(socket.sslContext))
+    socket.sslHandle = SSLNew(socket.sslContext.context)
     if socket.sslHandle == nil:
       raiseSslError()
 

lib/pure/net.nim

@@ -89,7 +89,7 @@ when defineSsl:
       protSSLv2, protSSLv3, protTLSv1, protSSLv23
 
     SslContext* = ref object
-      context: SslCtx
+      context*: SslCtx
       extraInternalIndex: int
       referencedData: HashSet[int]