Backport two commits from libsndfile upstream to fix a segfault and
two potential buffer overflows.
(From OE-Core rev: 9907e20868397a9823cc1e755ee1b697da6be2f3)
(From OE-Core rev: 82b481afc21604603b9c2d6c6b4c428d445cad92)
Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>