Fix use-without-initialization

libssh/session.c

@@ -366,7 +366,7 @@ int ssh_get_version(ssh_session session) {
  */
 SSH_PACKET_CALLBACK(ssh_packet_disconnect_callback){
 	uint32_t code;
-	char *error;
+	char *error=NULL;
 	ssh_string error_s;
 	(void)user;
 	(void)type;
@@ -376,9 +376,11 @@ SSH_PACKET_CALLBACK(ssh_packet_disconnect_callback){
     error = string_to_char(error_s);
     string_free(error_s);
   }
-    ssh_log(session, SSH_LOG_PACKET, "Received SSH_MSG_DISCONNECT %d:%s",code,error);
+  ssh_log(session, SSH_LOG_PACKET, "Received SSH_MSG_DISCONNECT %d:%s",code,
+      error != NULL ? error : "no error");
   ssh_set_error(session, SSH_FATAL,
-        "Received SSH_MSG_DISCONNECT: %d:%s",code,error);
+      "Received SSH_MSG_DISCONNECT: %d:%s",code,
+      error != NULL ? error : "no error");
   SAFE_FREE(error);
 
   ssh_socket_close(session->socket);