Incorrect decompilation, missing brackets?

Input (prints 0):
```
-- Ubuntu 22.04 (WSL) 32-bit luac5.3
-- luac5.3 -o test.luac test.lua
a = 3
print(2 - (a - 1))
```

Decompiled (prints -2):
```
-- filename: @test.lua
-- version: lua53
-- line: [0, 0] id: 0
a = 3
print(2 - a - 1)
```