[ORKNavigationContainerView] Use explicit struct initialization
[ORKNavigationContainerView] Use explicit struct initialization

YuanZhu-apple/ResearchKit,mluedke2/ResearchKit,YuanZhu-apple/ResearchKit,YuanZhu-apple/ResearchKit,weijentu/ResearchKit,weijentu/ResearchKit,cornelltech/ResearchKit,mluedke2/ResearchKit,oliverschaefer/ResearchKit,YuanZhu-apple/ResearchKit,jeremiahyan/ResearchKit,oliverschaefer/ResearchKit,jeremiahyan/ResearchKit,oliverschaefer/ResearchKit,cornelltech/ResearchKit,boland25/ResearchKit,chb/ResearchKit,jeremiahyan/ResearchKit,cornelltech/ResearchKit,boland25/ResearchKit,md0u80c9/ResearchKit,chb/ResearchKit,md0u80c9/ResearchKit,chb/ResearchKit,oliverschaefer/ResearchKit,boland25/ResearchKit,md0u80c9/ResearchKit,mluedke2/ResearchKit,weijentu/ResearchKit,md0u80c9/ResearchKit,boland25/ResearchKit,weijentu/ResearchKit,chb/ResearchKit