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-rw-r--r--imap/src/c-client/mail.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/imap/src/c-client/mail.c b/imap/src/c-client/mail.c
index 1b6f93c3..f3e4bdd2 100644
--- a/imap/src/c-client/mail.c
+++ b/imap/src/c-client/mail.c
@@ -1677,7 +1677,7 @@ char *mail_fetch_message (MAILSTREAM *stream,unsigned long msgno,
unsigned long i,j;
if (len) *len = 0; /* default return size */
if (flags & FT_UID) { /* UID form of call */
- if (msgno = mail_msgno (stream,msgno)) flags &= ~FT_UID;
+ if ((msgno = mail_msgno (stream,msgno)) != 0L) flags &= ~FT_UID;
else return ""; /* must get UID/msgno map first */
}
/* initialize message data identifier */