Added RERR_VANISHED.

errcode.h

@@ -26,7 +26,7 @@
 #define RERR_SYNTAX     1       /* syntax or usage error */
 #define RERR_PROTOCOL   2       /* protocol incompatibility */
 #define RERR_FILESELECT 3       /* errors selecting input/output files, dirs */
-#define RERR_UNSUPPORTED 4       /* requested action not supported */
+#define RERR_UNSUPPORTED 4      /* requested action not supported */
 #define RERR_STARTCLIENT 5      /* error starting client-server protocol */
 
 #define RERR_SOCKETIO   10      /* error in socket IO */
@@ -39,6 +39,7 @@
 #define RERR_WAITCHILD  21      /* some error returned by waitpid() */
 #define RERR_MALLOC     22      /* error allocating core memory buffers */
 #define RERR_PARTIAL    23      /* partial transfer */
+#define RERR_VANISHED   24      /* file(s) vanished on sender side */
 
 #define RERR_TIMEOUT    30      /* timeout in data send/receive */