[rewarding] fix error check position

[dustinxie]

Description

for safety, use HF to gate the position of this error check.
After HF, this gating can be removed (that is, with the error check moved to correct position)

Fixes #(issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• [] New feature (non-breaking change which adds functionality)
• [] Code refactor or improvement
• [] Breaking change (fix or feature that would cause a new or changed behavior of existing functionality)
• [] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• make test
• [] fullsync
• [] Other test (please specify)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #3704 (2b7ff7f) into master (263ff82) will decrease coverage by 0.50%.
The diff coverage is 83.94%.

@@            Coverage Diff             @@
##           master    #3704      +/-   ##
==========================================
- Coverage   74.47%   73.97%   -0.51%     
==========================================
  Files         269      291      +22     
  Lines       23925    24697     +772     
==========================================
+ Hits        17818    18269     +451     
- Misses       5174     5495     +321     
  Partials      933      933              

Impacted Files	Coverage Δ
action/protocol/staking/candidate_statereader.go	53.94% <ø> (-3.38%)	⬇️
action/protocol/types.go	0.00% <0.00%> (ø)
api/web3server.go	27.59% <0.00%> (-34.51%)	⬇️
db/db_bolt.go	68.53% <0.00%> (-3.60%)	⬇️
ioctl/newcmd/action/actiontransfer.go	100.00% <ø> (ø)
ioctl/newcmd/action/stake2withdraw.go	95.74% <ø> (ø)
ioctl/newcmd/action/xrc20transferfrom.go	100.00% <ø> (ø)
ioctl/newcmd/did/didgethash.go	100.00% <ø> (ø)
ioctl/newcmd/did/didgeturi.go	100.00% <ø> (ø)
server/itx/server.go	62.20% <ø> (+2.20%)	⬆️
... and 44 more

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