use char instead of int to please T_BOOL (closes #15597)
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 2c145ad..af37410 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -11,7 +11,7 @@
 #define PyException_HEAD PyObject_HEAD PyObject *dict;\
              PyObject *args; PyObject *traceback;\
              PyObject *context; PyObject *cause;\
-             int suppress_context;
+             char suppress_context;
 
 typedef struct {
     PyException_HEAD