transfer locations once we find some data

If we don't wait for data we may get the location at the end of an empty
stream.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/stream.c b/src/stream.c
index 37433ee4..1b68bae3 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -465,12 +465,13 @@ static int data_consume_data( struct colm_program *prg, struct stream_impl_data
 		if ( buf == 0 )
 			break;
 
-		if ( !loc_set( loc ) )
-			data_transfer_loc( prg, loc, sid );
-
 		/* Anything available in the current buffer. */
 		int avail = buf->length - buf->offset;
 		if ( avail > 0 ) {
+
+			if ( !loc_set( loc ) )
+				data_transfer_loc( prg, loc, sid );
+
 			/* The source data from the current buffer. */
 			int slen = avail <= remaining ? avail : remaining;
 			consumed += slen;