Fixes from using cppcheck tool

Various fixes for uninitialized variable use.
sniffer.c: close file when seek fails
tls.c: fix QSH_GET_SIZE macro
wolfio.c: uIPGenerateCookie: use the parameter, _ctx, instead of self
referencing.
wolfssl_adds.c: check for equivalent to XBADFILE to indicate error.
SP: change right shift of signed value to unsigned
sp_int.h: define 128-bit types
types.h: change a XMALLOC define to not use (,,) - cppcheck doesn't like
it and is unnecessary.

wolfcrypt/src/ecc.c

@@ -4689,7 +4689,7 @@ int wc_ecc_sign_hash(const byte* in, word32 inlen, byte* out, word32 *outlen,
 int wc_ecc_sign_hash_ex(const byte* in, word32 inlen, WC_RNG* rng,
                      ecc_key* key, mp_int *r, mp_int *s)
 {
-   int    err;
+   int    err = 0;
 #ifndef WOLFSSL_SP_MATH
    mp_int* e;
 #if (!defined(WOLFSSL_ASYNC_CRYPT) || !defined(HAVE_CAVIUM_V)) && \