Comment 2 for bug 925306

StacktraceTop:
 operator() (base=0x7f98f742cbac, this=<synthetic pointer>) at /build/buildd/pango1.0-1.29.4/./pango/opentype/hb-open-type-private.hh:456
 operator+<const RecordListOf<Script>*, USHORT, Script> (offset=<optimized out>, base=<optimized out>) at /build/buildd/pango1.0-1.29.4/./pango/opentype/hb-open-type-private.hh:483
 operator[] (this=0x7f98f742cbac, i=0) at /build/buildd/pango1.0-1.29.4/./pango/opentype/hb-ot-layout-common-private.hh:109
 get_script (i=0, this=<optimized out>) at /build/buildd/pango1.0-1.29.4/./pango/opentype/hb-ot-layout-gsubgpos-private.hh:915
 hb_ot_layout_language_get_feature_indexes (face=<optimized out>, table_tag=<optimized out>, script_index=0, language_index=2027632508, feature_count=0x7fff78db27d0, feature_indexes=0x0) at /build/buildd/pango1.0-1.29.4/./pango/opentype/hb-ot-layout.cc:446