Looking at coverity results, it looks like a dupe of bug 1168010 It says: leaked_storage: Variable rb going out of scope leaks the storage it points to. here https://searchfox.org/mozilla-central/source/toolkit/mozapps/update/updater/updater.cpp#4262
Bug 1520801 Comment 6 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Looking at coverity results, it looks like a dupe of bug 1168010 It says: _leaked_storage: Variable rb going out of scope leaks the storage it points to._ here https://searchfox.org/mozilla-central/source/toolkit/mozapps/update/updater/updater.cpp#4262