Function LLVMSetNormalDest 

pub unsafe extern "C" fn LLVMSetNormalDest(
    InvokeInst: LLVMValueRef,
    B: LLVMBasicBlockRef,
)

Set the normal destination basic block.

This only works on llvm::InvokeInst instructions.

@see llvm::InvokeInst::setNormalDest()