Fix ordering of nested elements when sortby = :firstexec

[rikhuijzer]

The ordering of nested elements was reversed when sortby = :firstexec:

julia> using TimerOutputs

julia> to = TimerOutput();

julia> @timeit to "group" begin
           @timeit to "sub1" sleep(0.1)
           @timeit to "sub2" sleep(0.1)
       end

julia> show(to; compact=true, sortby=:firstexec)
 ───────────────────────────────────────────────────
                         Time          Allocations
                   ───────────────   ───────────────
  Total measured:       46.0s            2.29MiB

 Section   ncalls     time    %tot     alloc    %tot
 ───────────────────────────────────────────────────
 group          1    202ms  100.0%   2.55KiB  100.0%
   sub2         1    101ms   50.0%      320B   12.3%
   sub1         1    101ms   50.0%      320B   12.3%
 ───────────────────────────────────────────────────

[codecov-commenter]

Codecov Report

Merging #144 (ea547e0) into master (87ba338) will increase coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #144      +/-   ##
==========================================
+ Coverage   89.16%   89.26%   +0.10%     
==========================================
  Files           5        5              
  Lines         406      410       +4     
==========================================
+ Hits          362      366       +4     
  Misses         44       44              

Impacted Files	Coverage Δ
src/show.jl	96.52% <100.00%> (+0.12%)	⬆️

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[rikhuijzer]

On your profile you say "keep pinging" so here we go: @KristofferC

[KristofferC]

On your profile you say "keep pinging" so here we go

Great!