rem: Ns_TlsAlloc(pkeyPtr, NULL);
add: Ns_TlsAlloc(pkeyPtr, FreeTls);
context: TclpThreadDataKeyInit(keyPtr)    Tcl_ThreadDataKey *keyPtr;	/* Identifier for the data chunk */{    Ns_Tls *pkeyPtr;    MASTER_LOCK;    if (*keyPtr == NULL) {	pkeyPtr = (Ns_Tls *)NsAlloc(sizeof(Ns_Tls));	Ns_TlsAlloc(pkeyPtr, NULL);	*keyPtr = (Tcl_ThreadDataKey)pkeyPtr;    }    MASTER_UNLOCK;}