Fix test/IRGen/cf.sil test for 32-bit iOS
Fix test/IRGen/cf.sil test for 32-bit iOS

If forgot to update this one when landing changes to the constant
struct builder in IRGen.

khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift