Correctly handle buffered protocols.
Correctly handle buffered protocols.

Reported by: Krystof Vasa



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