fix search result sorting codes

[rinx]

Description:

i fixed sorting codes for search results.

Related Issue:

nothing

How Has This Been Tested?:

nothing

Environment:

• Go Version: 1.15.2
• Docker Version: 19.03.8
• Kubernetes Version: 1.18.2
• NGT Version: 1.12.1

Types of changes:

• Bug fix [type/bug]
• New feature [type/feature]
• Add tests [type/test]
• Security related changes [type/security]
• Add documents [type/documentation]
• Refactoring [type/refactoring]
• Update dependencies [type/dependency]
• Update benchmarks and performances [type/bench]
• Update CI [type/ci]

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully ran tests with your changes locally?

Checklist:

• I have read the CONTRIBUTING document.
• I have checked open Pull Requests for the similar feature or fixes?
• I have added tests and benchmarks to cover my changes.
• I have ensured all new and existing tests passed.
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly.

[vdaas-ci]

[CHATOPS:HELP] ChatOps commands.

• 🙆‍♀️ /approve - approve
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• 🍱 /format - format codes and add licenses
• ✅ /gen-test - generate test codes
• 🏷️ /label - add labels
• ⏪ /rebase - rebase master

[codecov]

Codecov Report

Merging #772 into master will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #772      +/-   ##
==========================================
- Coverage   16.74%   16.73%   -0.01%     
==========================================
  Files         420      420              
  Lines       19480    19480              
==========================================
- Hits         3261     3260       -1     
- Misses      15997    15998       +1     
  Partials      222      222              

Impacted Files	Coverage Δ
pkg/gateway/vald/handler/grpc/handler.go	0.00% <0.00%> (ø)
internal/errgroup/group.go	92.42% <0.00%> (-1.52%)	⬇️

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[kpango]

LGTM, could you please patch release this?

[rinx]

Okay. i'll merge it as patch release.

[rinx]

finished. thanks.