A few more type fixes for py3k that were missed in r69635
diff --git a/Include/longintrepr.h b/Include/longintrepr.h
index 72f7199..2dbb3f5 100644
--- a/Include/longintrepr.h
+++ b/Include/longintrepr.h
@@ -19,6 +19,7 @@
long_pow() requires that SHIFT be divisible by 5. */
typedef unsigned short digit;
+typedef short sdigit; /* signed variant of digit */
#define BASE_TWODIGITS_TYPE long
typedef unsigned BASE_TWODIGITS_TYPE twodigits;
typedef BASE_TWODIGITS_TYPE stwodigits; /* signed variant of twodigits */