Backport two commits from libsndfile upstream to fix a segfault and
two potential buffer overflows.
(From OE-Core rev: e2fdc340c109bd64b1520443b27bd42a0faef0e0)
Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>