[PATCH 1/2] user32: Do not call SendMessage() to show a window that is already visible.

[Alexey Prokhin]

From: Kimmo Myllyvirta

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=39731
Signed-off-by: Alexey Prokhin 
---
 dlls/user32/winpos.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/user32/winpos.c b/dlls/user32/winpos.c
index 5837c179e4..8e09455e99 100644
--- a/dlls/user32/winpos.c
+++ b/dlls/user32/winpos.c
@@ -1231,6 +1231,9 @@ BOOL WINAPI ShowWindow( HWND hwnd, INT cmd )
     if ((cmd == SW_HIDE) && !(GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE))
         return FALSE;

+    if ((cmd == SW_SHOW) && (GetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE))
+        return TRUE;
+
     return SendMessageW( hwnd, WM_WINE_SHOWWINDOW, cmd, 0 );
 }