--- work/qtmultimedia/src/plugins/directshow/camera/dscamerasession.cpp.orig	2017-09-20 07:07:03.446258400 -0700
+++ work/qtmultimedia/src/plugins/directshow/camera/dscamerasession.cpp	2017-09-20 07:08:45.102717500 -0700
@@ -92,12 +92,12 @@
 
     STDMETHODIMP_(ULONG) AddRef()
     {
-        return InterlockedIncrement(&m_ref);
+        return InterlockedIncrement(reinterpret_cast<volatile long *>(&m_ref));
     }
 
     STDMETHODIMP_(ULONG) Release()
     {
-        ULONG ref = InterlockedDecrement(&m_ref);
+        ULONG ref = InterlockedDecrement(reinterpret_cast<volatile long *>(&m_ref));
         if (ref == 0)
             delete this;
         return ref;