This patch makes the iconv_fread test pass in FreeTDS

tds_dynamic_stream_init_4096.patch

diff --git a/src/tds/stream.c b/src/tds/stream.c
index a008ebe..74e3268 100644
--- a/src/tds/stream.c
+++ b/src/tds/stream.c
@@ -205,11 +205,11 @@ TDSRET tds_dynamic_stream_init(TDSDYNAMICSTREAM * stream, void **ptr, size_t all
 {
     stream->stream.write = tds_dynamic_stream_write;
 	stream->buf = ptr;
-	if (allocated < 1024) {
+	if (allocated < 4096) {
 		if (*ptr) free(*ptr);
-		*ptr = malloc(1024);
+		*ptr = malloc(4096);
 		if (!*ptr) return TDS_FAIL;
-		allocated = 1024;
+		allocated = 4096;
 	}
 	stream->allocated = allocated;
 	stream->size = 0;