[fetchmail]fetchall and seen

When the fetchall option is given for imap protocol, the logs show
that all the messages are seen:

$ fetchmail -a -p imap bombay.retortsoft.com
9 messages (9 seen) for shetye at bombay.retortsoft.com.
...

Though this (probably) does not affect the downloading of the mails
later, this message is misleading.

This patch should fix it:

==================================================================
diff -Naur fetchmail-5.8.4.orig/imap.c fetchmail-5.8.4/imap.c
--- fetchmail-5.8.4.orig/imap.c Sat May 12 12:13:25 2001
+++ fetchmail-5.8.4/imap.c      Tue May 22 12:18:37 2001
@@ -565,7 +565,8 @@
            }
        } while
            (tag[0] != '\0' && strncmp(buf, tag, strlen(tag)));
-    }
+    } else
+       unseen = -1;
 
     *newp = unseen;
     expunged = 0;
==================================================================

Sunil Shetye.