lib-mail: istream-dot.c - Use container_of macro

diff --git a/src/lib-mail/istream-dot.c b/src/lib-mail/istream-dot.c
index 1736cfbe452fbeb14d960fa346d6af4ab2762610..59ab08464e27e0eee13afbc81c2e9677e271dea0 100644 (file)
--- a/src/lib-mail/istream-dot.c
+++ b/src/lib-mail/istream-dot.c
@@ -119,7 +119,8 @@ i_stream_dot_return(struct istream_private *stream, size_t dest, ssize_t ret)
 static ssize_t i_stream_dot_read(struct istream_private *stream)
 {
        /* @UNSAFE */
-       struct dot_istream *dstream = (struct dot_istream *)stream;
+       struct dot_istream *dstream =
+               container_of(stream, struct dot_istream, istream);
        const unsigned char *data;
        size_t i, dest, size, avail;
        ssize_t ret, ret1;