liblzma: Add a comment.

diff --git a/src/liblzma/common/stream_encoder_mt.c b/src/liblzma/common/stream_encoder_mt.c
index 448d871cd757b11eb01138a61a34bfc2ab2ccccd..01e40339750af9496f160d4be1be34be10fb8a00 100644 (file)
--- a/src/liblzma/common/stream_encoder_mt.c
+++ b/src/liblzma/common/stream_encoder_mt.c
@@ -700,7 +700,7 @@ stream_encode_mt(void *coder_ptr, const lzma_allocator *allocator,
                                ret = coder->thread_error;
                                if (ret != LZMA_OK) {
                                        assert(ret != LZMA_STREAM_END);
-                                       break;
+                                       break; // Break out of mythread_sync.
                                }
 
                                // Try to read compressed data to out[].