[truetype] Fix memory leak.

Problem reported by Grissiom <chaos.proton@gmail.com>; in

  http://lists.nongnu.org/archive/html/freetype/2015-05/msg00013.html

there is an example code to trigger the bug.

* src/truetype/ttobjs.c (tt_size_init_bytecode): Free old `size'
data before allocating again.  Bug most probably introduced four
years ago in version 2.4.3.
2 files changed