prevent pivot moves after state commit

[ucwong]

No description provided.

[codecov]

Codecov Report

Merging #1726 (92d1038) into master (cfb1075) will increase coverage by 0.03%.
Report is 12 commits behind head on master.
The diff coverage is 7.27%.

❗ Current head 92d1038 differs from pull request most recent head 5e9bf41. Consider uploading reports for the commit 5e9bf41 to get more accurate results

@@            Coverage Diff             @@
##           master    #1726      +/-   ##
==========================================
+ Coverage   52.79%   52.83%   +0.03%     
==========================================
  Files         485      485              
  Lines       60366    60396      +30     
==========================================
+ Hits        31869    31908      +39     
+ Misses      26051    26040      -11     
- Partials     2446     2448       +2     

Files Changed	Coverage Δ
cmd/cortex/main.go	21.73% <ø> (ø)
core/types/block.go	23.07% <ø> (ø)
core/types/gen_account_rlp.go	0.00% <ø> (ø)
core/types/gen_log_rlp.go	100.00% <ø> (ø)
internal/flags/flags.go	9.00% <0.00%> (ø)
internal/flags/helpers.go	1.58% <0.00%> (-0.38%)	⬇️
rlp/rlpgen/main.go	11.26% <0.00%> (+0.74%)	⬆️
metrics/metrics.go	26.27% <20.00%> (-0.59%)	⬇️
ctxc/downloader/downloader.go	79.02% <33.33%> (+0.84%)	⬆️

... and 15 files with indirect coverage changes