fix concurrent piece map panic

[244372610]

Signed-off-by: sunwp [email protected]

Description

Related Issue

fix #1066

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• Code compiles correctly.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #1121 (3dbb48b) into main (d1b8ee6) will decrease coverage by 0.16%.
The diff coverage is 52.94%.

@@            Coverage Diff             @@
##             main    #1121      +/-   ##
==========================================
- Coverage   45.98%   45.81%   -0.17%     
==========================================
  Files         130      130              
  Lines       10000    10020      +20     
==========================================
- Hits         4598     4591       -7     
- Misses       4882     4908      +26     
- Partials      520      521       +1     

Flag	Coverage Δ
unittests	45.81% <52.94%> (-0.17%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cdn/supervisor/task/manager.go	25.23% <0.00%> (-1.24%)	⬇️
cdn/supervisor/task/task.go	42.55% <0.00%> (-3.10%)	⬇️
cdn/rpcserver/rpcserver.go	61.58% <50.00%> (+0.37%)	⬆️
cdn/supervisor/progress/manager.go	85.00% <75.00%> (-3.14%)	⬇️
cdn/supervisor/progress/progress.go	90.62% <100.00%> (-0.42%)	⬇️
client/daemon/peer/peertask_conductor.go	57.31% <0.00%> (-0.36%)	⬇️
client/daemon/daemon.go	5.13% <0.00%> (-0.28%)	⬇️
client/config/peerhost.go	35.29% <0.00%> (ø)
client/daemon/peer/piece_broker.go	85.18% <0.00%> (+3.70%)	⬆️