Bug 334687: Possible null pointer dereference in nsPluginHostImpl.cpp, patch by Ryan Flint <rflint@dslr.net>, r+sr=jst

modules/plugin/base/src/nsPluginHostImpl.cpp

@@ -415,7 +415,7 @@ nsActivePlugin::~nsActivePlugin()
       mInstance->Destroy();
 
     NS_RELEASE(mInstance);
-    NS_RELEASE(mPeer);
+    NS_IF_RELEASE(mPeer);
   }
   PL_strfree(mURL);
 }