lib-dcrypt: Improved error message when istream isn't encrypted.

diff --git a/src/lib-dcrypt/istream-decrypt.c b/src/lib-dcrypt/istream-decrypt.c
index 903b73142671c5f67a739d8ac70d1bdc6e08efe4..cbe9b3e967993edb469b0cbfce28d30968f489bc 100644 (file)
--- a/src/lib-dcrypt/istream-decrypt.c
+++ b/src/lib-dcrypt/istream-decrypt.c
@@ -556,7 +556,7 @@ ssize_t i_stream_decrypt_read_header(struct decrypt_istream *stream,
        if (mlen < sizeof(IOSTREAM_CRYPT_MAGIC))
                return 0;
        if (memcmp(data, IOSTREAM_CRYPT_MAGIC, sizeof(IOSTREAM_CRYPT_MAGIC)) != 0) {
-               io_stream_set_error(&stream->istream.iostream, "Invalid magic");
+               io_stream_set_error(&stream->istream.iostream, "Stream is not encrypted (invalid magic)");
                stream->istream.istream.stream_errno = EINVAL;
                return -1;
        }