fix typo in assertion
diff --git a/src/libFLAC/seekable_stream_decoder.c b/src/libFLAC/seekable_stream_decoder.c
index 4dfe78b..1ae133d 100644
--- a/src/libFLAC/seekable_stream_decoder.c
+++ b/src/libFLAC/seekable_stream_decoder.c
@@ -404,7 +404,7 @@
 	FLAC__uint64 length;
 
 	FLAC__ASSERT(decoder != 0);
-	FLAC__ASSERT(decoder->protected_->state == FLAC__SEEKABLE_STREAM_DECODER_OK || decoder->protected_->state == END_OF_STREAM);
+	FLAC__ASSERT(decoder->protected_->state == FLAC__SEEKABLE_STREAM_DECODER_OK || decoder->protected_->state == FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM);
 
 	decoder->protected_->state = FLAC__SEEKABLE_STREAM_DECODER_SEEKING;