Handle the case where the alignment of a new ivar is 0.  
Handle the case where the alignment of a new ivar is 0.  

Reported by: Lubos Dolezel



gnustep/libobjc2,gnustep/libobjc2,davidchisnall/libobjc2,crystax/android-vendor-libobjc2,ngrewe/libobjc2,darlinghq/darling-libobjc2,ngrewe/libobjc2,darlinghq/darling-libobjc2,davidchisnall/libobjc2,crystax/android-vendor-libobjc2