Fix some warnings from MSVC
diff --git a/Modules/audioop.c b/Modules/audioop.c
index c11506c..d715783 100644
--- a/Modules/audioop.c
+++ b/Modules/audioop.c
@@ -4,6 +4,7 @@
#define PY_SSIZE_T_CLEAN
#include "Python.h"
+#include <inttypes.h>
typedef short PyInt16;
@@ -448,7 +449,7 @@
int val = GETRAWSAMPLE(width, fragment->buf, i);
/* Cast to unsigned before negating. Unsigned overflow is well-
defined, but signed overflow is not. */
- if (val < 0) absval = -(unsigned int)val;
+ if (val < 0) absval = (unsigned int)-(int64_t)val;
else absval = val;
if (absval > max) max = absval;
}