Fix out of bounds read.

Fix out of bounds read.
(Apply security patch for CVE-2016-7424)

 - Referenced

 The put_no_rnd_pixels8_xy2_mmx function in x86/rnd_template.c in libav 11.7 and earlier allows remote
 attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted MP3 file
 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7424

 - Solution

 https://git.libav.org/?p=libav.git;a=commit;h=136f55207521f0b03194ef5b55ba70f1635d6aee
 Fix out of bounds read.

Change-Id: I20a5beb71b95b0286f89a66441d07fce7d21de9a
Signed-off-by: Jiyong Min <jiyong.min@samsung.com>