gst/matroska/ebml-read.c: Don't try to modify read-only data.

Original commit message from CVS:
* gst/matroska/ebml-read.c: (gst_ebml_read_sint):
Don't try to modify read-only data.
* gst/matroska/matroska-demux.c:
(gst_matroska_demux_parse_blockgroup_or_simpleblock):
Fix comment (won't crash any longer now).
3 files changed