[PATCH] topic: fix istat macro to work with single line if statement

[Matt Fowles]

# HG changeset patch
# User Matt Fowles <matt.fowles at gmail.com>
# Date 1459867423 14400
#      Tue Apr 05 10:43:43 2016 -0400
# Node ID e96ec39342772ecb4b96c3818fa6eb235128f0b5
# Parent  ff0d3b6b287f89594bd8d0308fe2810d2a18ea01
topic: fix istat macro to work with single line if statement

diff --git a/mercurial/parsers.c b/mercurial/parsers.c
--- a/mercurial/parsers.c
+++ b/mercurial/parsers.c
@@ -1029,12 +1029,14 @@
 		return NULL;
 
 #define istat(__n, __d) \
-	t = PyInt_FromSsize_t(self->__n); \
-	if (!t) \
-		goto bail; \
-	if (PyDict_SetItemString(obj, __d, t) == -1) \
-		goto bail; \
-	Py_DECREF(t);
+	do { \
+		t = PyInt_FromSsize_t(self->__n); \
+		if (!t) \
+			goto bail; \
+		if (PyDict_SetItemString(obj, __d, t) == -1) \
+			goto bail; \
+		Py_DECREF(t); \
+	} while (0)
 
 	if (self->added) {
 		Py_ssize_t len = PyList_GET_SIZE(self->added);