fix(writepreredeem): improved error handler

[cnlangzi]

Changes

Fixes

• improved error handle on GetWritePoolBalance as per mentioned on https://0chain.slack.com/archives/C03HUFQD01M/p1672595676010229

Tests

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• 0chain:
• gosdk:
• system_test:
• zboxcli:
• zwalletcli:
• Other: ...

[codecov-commenter]

Codecov Report

Merging #903 (003d30b) into staging (d78617d) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           staging     #903      +/-   ##
===========================================
- Coverage    26.43%   26.41%   -0.03%     
===========================================
  Files           77       77              
  Lines         7875     7883       +8     
===========================================
  Hits          2082     2082              
- Misses        5521     5529       +8     
  Partials       272      272              

Flag	Coverage Δ
Unit-Tests	26.41% <0.00%> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
...ode/go/0chain.net/blobbercore/allocation/entity.go	0.00% <0.00%> (ø)
...et/blobbercore/handler/object_operation_handler.go	31.29% <0.00%> (ø)

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[boddumanohar]

Good catch