explorer: Use BOOL type where appropriate

[Frédéric Delanoy]

---
 programs/explorer/systray.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/programs/explorer/systray.c b/programs/explorer/systray.c
index c15fbf0..4676483 100644
--- a/programs/explorer/systray.c
+++ b/programs/explorer/systray.c
@@ -196,7 +196,7 @@ static void balloon_create_timer(void)
         SendMessageW( balloon_window, TTM_SETTITLEW, balloon_icon->info_flags,
                       (LPARAM)balloon_icon->info_title );
     set_balloon_position( balloon_icon );
-    SendMessageW( balloon_window, TTM_TRACKACTIVATE, TRUE, (LPARAM)&ti );
+    SendMessageW( balloon_window, TTM_TRACKACTIVATE, 1, (LPARAM)&ti );
     KillTimer( tray_window, BALLOON_CREATE_TIMER );
     SetTimer( tray_window, BALLOON_SHOW_TIMER, balloon_icon->info_timeout, NULL );
 }
-- 
1.8.4