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.

swig/wolfssl_adds.c

@@ -209,7 +209,7 @@ RsaKey* GetRsaPrivateKey(const char* keyFile)
         word32 idx = 0;
         XFILE  file = XFOPEN(keyFile, "rb");
 
-        if (file != XBADFILE)
+        if (file == XBADFILE)
         {
             free(key);
             return 0;