id: mutex-unlock-mismatch
valid:
  - |
    func work() {
        var mu sync.Mutex
        mu.Lock()
        defer mu.Unlock()
    }
  - |
    func good() {
        var mu sync.Mutex
        mu.Lock()
        defer mu.Unlock()
        doStuff()
    }
invalid:
  - |
    func bad() {
        var mu sync.Mutex
        if true {
            mu.Lock()
        }
    }
  - |
    func bad2() {
        var mu sync.Mutex
        mu.Lock()
        doSomething()
    }