user32: Return at the end of processing (cmd == SW_HIDE).

dlls/user32/tests/msg.c

@@ -4112,7 +4112,7 @@ static void test_messages(void)
     ok(GetActiveWindow() == hwnd, "window should be active\n");
     ok(GetFocus() == hwnd, "window should have input focus\n");
     ShowWindow(hwnd, SW_HIDE);
-    ok_sequence(WmHideOverlappedSeq, "ShowWindow(SW_HIDE):overlapped", TRUE);
+    ok_sequence(WmHideOverlappedSeq, "ShowWindow(SW_HIDE):overlapped", FALSE);
 
     ShowWindow(hwnd, SW_SHOW);
     ok_sequence(WmShowOverlappedSeq, "ShowWindow(SW_SHOW):overlapped", TRUE);

dlls/user32/winpos.c

@@ -1073,6 +1073,7 @@ static BOOL show_window( HWND hwnd, INT cmd )
             if (parent == GetDesktopWindow()) parent = 0;
             SetFocus(parent);
         }
+        return wasVisible;
     }
 
     if (IsIconic(hwnd)) WINPOS_ShowIconTitle( hwnd, TRUE );