Fast path mis-attributes

[maleadt]

julia> to = TimerOutput()
 ──────────────────────────────────────────────────────────────────
                           Time                   Allocations      
                   ──────────────────────   ───────────────────────
 Tot / % measured:      546ms / 0.00%           33.0MiB / 0.00%    

 Section   ncalls     time   %tot     avg     alloc   %tot      avg
 ──────────────────────────────────────────────────────────────────
 ──────────────────────────────────────────────────────────────────

julia> @timeit to "foo" identity(nothing)

julia> @timeit to "foobar" begin
           @timeit to "foo" identity(nothing)
           @timeit to "baz" identity(nothing)
       end

julia> @timeit to "baz" identity(nothing)

julia> to
 ──────────────────────────────────────────────────────────────────
                           Time                   Allocations      
                   ──────────────────────   ───────────────────────
 Tot / % measured:      7.17s / 0.10%           51.8MiB / 0.08%    

 Section   ncalls     time   %tot     avg     alloc   %tot      avg
 ──────────────────────────────────────────────────────────────────
 foo            1   6.92ms   100%  6.92ms   43.1KiB  96.1%  43.1KiB
 foobar         1   13.3μs  0.19%  13.3μs   1.75KiB  3.90%  1.75KiB
   baz          2   11.6μs  0.17%  5.79μs     64.0B  0.14%    32.0B
   foo          1   4.41μs  0.06%  4.41μs     32.0B  0.07%    32.0B
 ──────────────────────────────────────────────────────────────────

foobar/baz has two calls, which is incorrect (one should be toplevel)