Qian Hong : quartz: Fix crashing when connect to NULL Pin.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 682291fb71288b292d590093f1021a3cd418a2fa
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=682291fb71288b292d590093f1021a3cd418a2fa

Author: Qian Hong <qhong at codeweavers.com>
Date:   Mon Nov  9 16:44:23 2015 +0800

quartz: Fix crashing when connect to NULL Pin.

Signed-off-by: Qian Hong <qhong at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/quartz/filtergraph.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c
index 26a4080..e0474fc 100644
--- a/dlls/quartz/filtergraph.c
+++ b/dlls/quartz/filtergraph.c
@@ -913,6 +913,9 @@ static HRESULT WINAPI FilterGraph2_Connect(IFilterGraph2 *iface, IPin *ppinOut,
 
     TRACE("(%p/%p)->(%p, %p)\n", This, iface, ppinOut, ppinIn);
 
+    if(!ppinOut || !ppinIn)
+        return E_POINTER;
+
     if (TRACE_ON(quartz))
     {
         hr = IPin_QueryPinInfo(ppinIn, &PinInfo);