fix(pool): Fixes pooling when replication is being utilized.

[mkaufmaner]

Pull Request check-list

Please make sure to review and check all of these items:

• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
• Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
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Description of change

Closes #11139

[sushantdhiman]

Looks good! Verified this issue is not present on v5 which does not try to pool error objects.

Some related issues

• Cannot read property 'destroy' of undefined #9242
• Crash when connection to mySQL is lost #9487

[sushantdhiman]

🎉 This PR is included in version 4.44.1 🎉

The release is available on:

• npm package (@v4 dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[achoppam]

From 4.44.1, I can see .git part of tar bundle.

Can we remove and release next version.

This is causing below issue
This issue happens 4.44.1

`

npm ERR! path /node_modules/sequelize
npm ERR! code EISGIT
npm ERR! git /node_modules/sequelize: Appears to be a git repo or submodule.
npm ERR! git /node_modules/sequelize
npm ERR! git Refusing to remove it. Update manually,
npm ERR! git or move it out of the way first.

npm ERR! A complete log of this run can be found in:
npm ERR! /users/asciuser/.npm/_logs/2019-07-03T00_32_38_362Z-debug.log
`