[clang-tidy] `readability-else-after-return` not detected in `case` blocks

[firewave]

void f(int i, bool b)
{
    switch(i)
    {
        case 0:
            if (b) {
                return;
            }
            else {}
        break;
    }
}

https://godbolt.org/z/fG1z7b97d

[llvmbot]

@llvm/issue-subscribers-clang-tidy

Author: Oliver Stöneberg (firewave)

```cpp void f(int i, bool b) { switch(i) { case 0: if (b) { return; } else {} break; } } ``` https://godbolt.org/z/fG1z7b97d

[flovent]

This is probably because the parent node of the If statement is not CompoundStmt. The code below will report a warning.

void f(int i, bool b)
{
    switch(i)
    {
        case 0: {
            if (b) {
                return;
            }
            else {}
        }
        break;
    }
}

https://godbolt.org/z/Tcrrec9zY