fix(ios): fixed ref counting of navTintColor #14297
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Fixes #14211.
Description:
navTintColor
for a tab group, not for windownewColor
was set to a new object and was unretained when later releasednewTintColor
inside the block to holdnewColor
newColor
ifcontroller == nil
Successfully tested with both code examples #14211 (comment) and #13917 (comment) in simulator.