[GitHub] [dubbo-go] flycash opened pull request #253: Fix: negative wait group count

["flycash (GitHub)" <gi...@apache.org>]

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**What this PR does**:
After fixing the registryProtocol singleton issue, #252 was found. And this PR will fix this. 
Please take a serious look at this PR.
**Which issue(s) this PR fixes**:
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Fixes #252 

**Special notes for your reviewer**:

**Does this PR introduce a user-facing change?**:
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[ Full content available at: https://github.com/apache/dubbo-go/pull/253 ]
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[GitHub] [dubbo-go] AlexStocks closed pull request #253: Fix: negative wait group count

["AlexStocks (GitHub)" <gi...@apache.org>]

[ pull request closed by AlexStocks ]

[ Full content available at: https://github.com/apache/dubbo-go/pull/253 ]
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