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Bug 613376 - r=josh a=blocking2.0Beta8+

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This commit is contained in:
Steven Michaud 2010-11-23 10:20:36 -06:00
parent 99925aac53
commit 9ccfffc401
1 changed files with 7 additions and 1 deletions
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8
layout/generic/nsObjectFrame.cpp
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@ -2912,7 +2912,13 @@ NS_INTERFACE_MAP_END
NS_IMETHODIMP
nsPluginInstanceOwner::SetInstance(nsIPluginInstance *aInstance)
{
NS_ASSERTION(!mInstance || !aInstance, "mInstance should only be set once!");
NS_ASSERTION(!mInstance || !aInstance, "mInstance should only be set or unset!");
// If we're going to null out mInstance after use, be sure to call
// mInstance->InvalidateOwner() here, since it now won't be called
// from our destructor. This fixes bug 613376.
if (mInstance && !aInstance)
mInstance->InvalidateOwner();
mInstance = aInstance;