fix dummy macro

Include/pydtrace.h

@@ -22,7 +22,7 @@
 
 /* Without DTrace, compile to nothing. */
 
-#define PyDTrace_LINE(arg0, arg1, arg2, arg3) do ; while (0)
+#define PyDTrace_LINE(arg0, arg1, arg2) do ; while (0)
 #define PyDTrace_FUNCTION_ENTRY(arg0, arg1, arg2)  do ; while (0)
 #define PyDTrace_FUNCTION_RETURN(arg0, arg1, arg2) do ; while (0)
 #define PyDTrace_GC_START(arg0)               do ; while (0)

Modules/_datetimemodule.c

@@ -2841,9 +2841,10 @@ static PyObject *date_getstate(PyDateTime_Date *self);
 static Py_hash_t
 date_hash(PyDateTime_Date *self)
 {
-    if (self->hashcode == -1)
+    if (self->hashcode == -1) {
         self->hashcode = generic_hash(
             (unsigned char *)self->data, _PyDateTime_DATE_DATASIZE);
+    }
 
     return self->hashcode;
 }