do-whiles within any block cause a panic

[addisoncrump]

Describe the bug
do-whiles within any block cause a panic ("attempt to subtract with overflow" in call_frame.rs)

To Reproduce
This JavaScript code reproduces the issue:

{
    do {
    } while (false);
}

Another case:

while (true) { do {} while (false); }

But notably not:

while (true) do {} while (false);

Expected behavior
do-while should execute as expected and not panic.

Additional context
Discovered with #1902.

[addisoncrump]

Mistakenly closed.