strncpy_s_inline copies more bytes than necessary

strncpy_s_inline copies more bytes than necessary

Given n equals to the maximum number of bytes to copy from src in the API,
or the rough estimate strlen of src, strncpy_s_inline should not copy more
than the number of bytes, computed by strlen(src), to dst if n is greater than
strlen(src). The number of bytes to copy is computed by strnlen(src,n), not n.

Change-Id: I088b46125d9776962750e121f1fbf441952efc2b
Signed-off-by: Steven <sluong@cisco.com>