readelf,libdw: Correct .debug_line overflow check for unit_length.

Signed-off-by: Mark Wielaard <mjw@redhat.com>
diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index f1f7b1d..0592220 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,8 @@
+2014-12-16  Mark Wielaard  <mjw@redhat.com>
+
+	* dwarf_getsrclines.c (read_srclines): Correct overflow check for
+	unit_length.
+
 2014-12-15  Mark Wielaard  <mjw@redhat.com>
 
 	* dwarf_getpubnames.c (get_offsets): Make sure whole unit fall inside