message: fix alignment val in memcpy/memset
diff: @@ -201,7 +201,7 @@ public:
  return error(i);
  RETURN_IDENTIFIER(make_unique<Memset>(*ptr, *val, *bytes,
  - min(1, i.getDestAlignment())));
  + max(1u, i.getDestAlignment())));
  }
  RetTy visitMemTransferInst(llvm::MemTransferInst &i) {
  @@ -213,8 +213,8 @@ public:
  return error(i);
  RETURN_IDENTIFIER(make_unique<Memcpy>(*dst, *src, *bytes,
  - min(1, i.getDestAlignment()),
  - min(1, i.getSourceAlignment()),
  + max(1u, i.getDestAlignment()),
  + max(1u, i.getSourceAlignment()),
  isa<llvm::MemMoveInst>(&i)));
  }
  