Lucas Zawacki : joy.cpl: Prevent crash on IDirectInputEffect_Release.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e3af37eb1c7875456621b85a6bee6de7c0e271b6
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e3af37eb1c7875456621b85a6bee6de7c0e271b6

Author: Lucas Zawacki <lfzawacki at gmail.com>
Date:   Mon Aug 20 03:39:07 2012 -0300

joy.cpl: Prevent crash on IDirectInputEffect_Release.

---

 dlls/joy.cpl/main.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/dlls/joy.cpl/main.c b/dlls/joy.cpl/main.c
index b84a0aa..0631466 100644
--- a/dlls/joy.cpl/main.c
+++ b/dlls/joy.cpl/main.c
@@ -90,6 +90,7 @@ static BOOL CALLBACK enum_callback(const DIDEVICEINSTANCEW *instance, void *cont
     joystick->num_buttons = caps.dwButtons;
     joystick->num_axes = caps.dwAxes;
     joystick->forcefeedback = caps.dwFlags & DIDC_FORCEFEEDBACK;
+    joystick->num_effects = 0;
 
     if (joystick->forcefeedback) data->num_ff++;
 
@@ -130,10 +131,10 @@ static void destroy_joysticks(struct JoystickData *data)
     for (i = 0; i < data->num_joysticks; i++)
     {
 
-        if (data->joysticks[i].forcefeedback)
+        if (data->joysticks[i].forcefeedback && data->joysticks[i].num_effects > 0)
         {
             for (j = 0; j < data->joysticks[i].num_effects; j++)
-            IDirectInputEffect_Release(data->joysticks[i].effects[j].effect);
+                IDirectInputEffect_Release(data->joysticks[i].effects[j].effect);
 
             HeapFree(GetProcessHeap(), 0, data->joysticks[i].effects);
         }