Bug 196340 Change NS_REINTERPRET_CAST(nsIScriptContext*, JS_GetContextPrivate(cx)) to use Static Cast

r=mstoltz sr=heikki

caps/src/nsScriptSecurityManager.cpp

@@ -1763,7 +1763,7 @@ nsScriptSecurityManager::GetPrincipalFromContext(JSContext *cx,
     NS_ENSURE_TRUE(::JS_GetOptions(cx) & JSOPTION_PRIVATE_IS_NSISUPPORTS,
                    NS_ERROR_FAILURE);
     nsISupports* scriptContextSupports =
-        NS_REINTERPRET_CAST(nsISupports*, JS_GetContextPrivate(cx));
+        NS_STATIC_CAST(nsISupports*, JS_GetContextPrivate(cx));
     nsCOMPtr<nsIScriptContext> scriptContext(do_QueryInterface(scriptContextSupports));
 
     if (scriptContext)