Reorder the construction of Preference objects so network.proxy.autoconfig_url gets constructed before network.proxy.type, which will ensure that networkProxyAutoconfigURL is set to the value of network.proxy.autoconfig_url before network.proxy.type construction triggers the call to updateReloadButton.
MozReview-Commit-ID: BQL0RlvnCOo
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extra : rebase_source : c7d38192e87a5f69ef796d2c6d4dd3cc9f839bb3
