fix typo in comment
diff --git a/src/libFLAC/stream_encoder.c b/src/libFLAC/stream_encoder.c
index f9be720..610e1b9 100644
--- a/src/libFLAC/stream_encoder.c
+++ b/src/libFLAC/stream_encoder.c
@@ -917,7 +917,7 @@
*
* WATCHOUT: libOggFLAC depends on us to write this block after the
* STREAMINFO since that's what the mapping requires. (In the case
- * that metadata_has_vorbis_comment it true it will have already
+ * that metadata_has_vorbis_comment is true it will have already
* insured that the metadata list is properly ordered.)
*/
if(!metadata_has_vorbis_comment) {