Declares data property of SPTPersistentCacheRecord as copy#110

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valeriyvan wants to merge 2 commits intospotify:masterfrom

valeriyvan:SPTPersistentCacheRecordMutable

Commits on Jan 24, 2019

Adds failing test case when raw of SPTPersistentCacheRecord are created in loop with same NSMutableData instance
valeriyvan
committed
Declares data property of SPTPersistentCacheRecord as copy to ease working with mutable data
valeriyvan
committed