Hack for crash in D3DGear if ppDevice pointer is NULL.

renderdoc/hooks/d3d11_hooks.cpp

@@ -195,9 +195,21 @@ private:
 			return E_UNEXPECTED;
 		}
 
+		// Hack for D3DGear which crashes if ppDevice is NULL
+		ID3D11Device *dummydev = NULL;
+		bool dummyUsed = false;
+		if(ppDevice == NULL)
+		{
+			ppDevice = &dummydev;
+			dummyUsed = true;
+		}
+
 		HRESULT ret = createFunc(pAdapter, DriverType, Software, Flags, pFeatureLevels, FeatureLevels,
 															SDKVersion, pUsedSwapDesc, ppSwapChain, ppDevice, pFeatureLevel, ppImmediateContext);
 
+		SAFE_RELEASE(dummydev);
+		if(dummyUsed) ppDevice = NULL;
+
 		RDCDEBUG("Called real createdevice...");
 		
 		bool suppress = false;