fix: peer empty parent

[gaius-qi]

Description

Related Issue

• Fix peer empty parent.

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 #724 (a4b09cb) into main (d3918ed) will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #724      +/-   ##
==========================================
- Coverage   38.56%   38.49%   -0.08%     
==========================================
  Files          89       89              
  Lines        6978     6978              
==========================================
- Hits         2691     2686       -5     
- Misses       3905     3910       +5     
  Partials      382      382              

Flag	Coverage Δ
Object-compatibility-e2etests	?
e2etests	?
unittests	38.49% <ø> (-0.08%)	⬇️

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

Impacted Files	Coverage Δ
client/daemon/peer/peertask_stream.go	54.60% <0.00%> (-1.59%)	⬇️