Fix warning

Author: ndossche

ext/standard/yescrypt/yescrypt-opt.c

@@ -1186,8 +1186,14 @@ static int yescrypt_kdf_body(const yescrypt_shared_t *shared,
 	    N > SIZE_MAX / 128 / r)
 		goto out_EINVAL;
 	if (flags & YESCRYPT_RW) {
+		/* PHP change: fix compile warning */
+#if SIZEOF_SIZE_T == 8
+		if (N / p <= 3)
+			goto out_EINVAL;
+#else
 		if (N / p <= 3 || p > SIZE_MAX / Salloc)
 			goto out_EINVAL;
+#endif
 	}
 #ifdef _OPENMP
 	else if (N > SIZE_MAX / 128 / (r * p)) {