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From f4c0aa3ba070e5c3ce996b33a31323a3a6820f0c Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <sbergman@redhat.com>
Date: Wed, 2 Dec 2020 10:44:28 +0100
Subject: Fix checks for null HANDLE in Windows-only code

clang-cl failed with "error: unordered comparison between pointer and zero
('HANDLE' (aka 'void *') and 'int')" in these two places introduced with
f219283b72ab537c2b5938222708f35227c1ebde "Sub-task CORE-4463: Windows
implementation for CORE-4462 (Make it possible to restore compressed .nbk files
without explicitly decompressing them)" and
c2cfa7824189ed7c3e5a19721effdf97c07dadfd "Prevent child process hung if it
writes too much data to the pipe and overflow the pipe buffer".
---
 src/utilities/nbackup/nbackup.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utilities/nbackup/nbackup.cpp b/src/utilities/nbackup/nbackup.cpp
index 6598b6e331..4703079d67 100644
--- a/src/utilities/nbackup/nbackup.cpp
+++ b/src/utilities/nbackup/nbackup.cpp
@@ -385,7 +385,7 @@ FB_SIZE_T NBackup::read_file(FILE_HANDLE &file, void *buffer, FB_SIZE_T bufsize)
 #ifdef WIN_NT
 		// Read child's stderr often to prevent child process hung if it writes
 		// too much data to the pipe and overflow the pipe buffer.
-		const bool checkChild = (childStdErr > 0 && file == backup);
+		const bool checkChild = (childStdErr != 0 && file == backup);
 		if (checkChild)
 			print_child_stderr();
 
@@ -790,7 +790,7 @@ void NBackup::close_backup()
 		return;
 #ifdef WIN_NT
 	CloseHandle(backup);
-	if (childId > 0)
+	if (childId != 0)
 	{
 		const bool killed = (WaitForSingleObject(childId, 5000) != WAIT_OBJECT_0);
 		if (killed)
-- 
2.28.0