[RISCV] Replace incorrect use of sizeof with array_lengthof

RISCVDisassembler was incorrectly using sizeof(Arr) when it should have used
sizeof(Arr)/sizeof(Arr[0]). Update to use array_lengthof instead.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356035 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed