lib-mail: ostream-dot - Use unsigned char

diff --git a/src/lib-mail/ostream-dot.c b/src/lib-mail/ostream-dot.c
index 85db303627c7ed8353f4cf680e17219eecb83579..7e26c6865d33c1e2336ded3e67edded753668ddd 100644 (file)
--- a/src/lib-mail/ostream-dot.c
+++ b/src/lib-mail/ostream-dot.c
@@ -106,7 +106,7 @@ o_stream_dot_sendv(struct ostream_private *stream,
        sent = added = 0;
        for (i = 0; i < iov_count && max_bytes > 0; i++) {
                size_t size = iov[i].iov_len, chunk;
-               const char *data = iov[i].iov_base, *p, *pend;
+               const unsigned char *data = iov[i].iov_base, *p, *pend;
                struct const_iovec iovn;
 
                p = data;