istream-data: Avoid assert crashing due to recently added assert.

diff --git a/src/lib/istream-data.c b/src/lib/istream-data.c
index 10f0b9aa2e17b5f1bcdf2415c3330964c3ea1aaf..7ecbbe076d722de7254c32e0f748c729b180ffa7 100644 (file)
--- a/src/lib/istream-data.c
+++ b/src/lib/istream-data.c
@@ -23,6 +23,7 @@ struct istream *i_stream_create_from_data(const void *data, size_t size)
        stream = i_new(struct istream_private, 1);
        stream->buffer = data;
        stream->pos = size;
+       stream->max_buffer_size = (size_t)-1;
 
        stream->read = i_stream_data_read;
        stream->seek = i_stream_data_seek;