[llvm][utils] Fix innocuous off by one in lldb formatters
num_children is "last_index" + 1, thus
num_children + 1 = "last_index" + 2
this worked anyway because the index of $$dereference$$ would work as long as
it was past the last index.
kastiglione on Feb 26 2021, 8:04 AM.Authored by