compat/winansi: check for errors of CreateThread() correctly

The return value for failed thread creation is NULL,
not INVALID_HANDLE_VALUE, unlike other Windows API functions.

Signed-off-by: Seija Kijin <[email protected]>
Acked-by: Johannes Sixt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: Seija Kijin

compat/winansi.c

@@ -644,7 +644,7 @@ void winansi_init(void)
 
 	/* start console spool thread on the pipe's read end */
 	hthread = CreateThread(NULL, 0, console_thread, NULL, 0, NULL);
-	if (hthread == INVALID_HANDLE_VALUE)
+	if (!hthread)
 		die_lasterr("CreateThread(console_thread) failed");
 
 	/* schedule cleanup routine */