memdebug: fix MSVC crash with -DMEMDEBUG_LOG_SYNC

Fixes #828

diff --git a/lib/memdebug.c b/lib/memdebug.c
index 1618bbaf31d3f02bdafdd4735c2a8bbc56196390..ccbf461be6113b6140235b8b0c0b60b26dc134f1 100644 (file)
--- a/lib/memdebug.c
+++ b/lib/memdebug.c
@@ -119,7 +119,7 @@ void curl_memdebug(const char *logname)
       logfile = stderr;
 #ifdef MEMDEBUG_LOG_SYNC
     /* Flush the log file after every line so the log isn't lost in a crash */
-    setvbuf(logfile, (char *)NULL, _IOLBF, 0);
+    setbuf(logfile, (char *)NULL);
 #endif
   }
 }