liblzma: Fix a comment

diff --git a/src/liblzma/common/index.c b/src/liblzma/common/index.c
index 6add6a68350249528a83df9b9a3d1fdab66caf42..afef5374888f1d4ae3ac5e2429c7a6db3c4d31ef 100644 (file)
--- a/src/liblzma/common/index.c
+++ b/src/liblzma/common/index.c
@@ -72,7 +72,8 @@ typedef struct {
        /// Every Record group is part of index_stream.groups tree.
        index_tree_node node;
 
-       /// Number of Blocks in this Stream before this group.
+       /// Block number (in this Stream) of the first Record in this group.
+       /// The first Block in the Stream is 1.
        lzma_vli number_base;
 
        /// Number of Records that can be put in records[].