Fix memory leak.

Always perform nexproto callback argument initialisation in s_server
otherwise we use uninitialised data if -nocert is specified.

apps/s_client.c

@@ -1965,6 +1965,10 @@ end:
 			print_stuff(bio_c_out,con,1);
 		SSL_free(con);
 		}
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
+	if (next_proto.data)
+		OPENSSL_free(next_proto.data);
+#endif
 	if (ctx != NULL) SSL_CTX_free(ctx);
 	if (cert)
 		X509_free(cert);

apps/s_server.c

@@ -1518,25 +1518,24 @@ bad:
 				goto end;
 				}
 			}
-
-# ifndef OPENSSL_NO_NEXTPROTONEG
-		if (next_proto_neg_in)
-			{
-			unsigned short len;
-			next_proto.data = next_protos_parse(&len,
-				next_proto_neg_in);
-			if (next_proto.data == NULL)
-				goto end;
-			next_proto.len = len;
-			}
-		else
-			{
-			next_proto.data = NULL;
-			}
-# endif
 #endif /* OPENSSL_NO_TLSEXT */
 		}
 
+#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 
+	if (next_proto_neg_in)
+		{
+		unsigned short len;
+		next_proto.data = next_protos_parse(&len, next_proto_neg_in);
+		if (next_proto.data == NULL)
+			goto end;
+		next_proto.len = len;
+		}
+	else
+		{
+		next_proto.data = NULL;
+		}
+#endif
+
 
 	if (s_dcert_file)
 		{