[LLVM10] remove unused stream argument

Author: vchuravy

src/disasm.cpp

@@ -914,7 +914,9 @@ static void jl_dump_asm_internal(
             MCDisassembler::DecodeStatus S;
             FuncMCView view = memoryObject.slice(Index);
             S = DisAsm->getInstruction(Inst, insSize, view, 0,
+#if JL_LLVM_VERSION < 100000
                                       /*VStream*/ nulls(),
+#endif
                                       /*CStream*/ pass != 0 ? Streamer->GetCommentOS() : nulls());
             if (pass != 0 && Streamer->GetCommentOS().tell() > 0)
                 Streamer->GetCommentOS() << '\n';