[HttpKernel] fixed memory limit display in MemoryDataCollector
bug #9395 [HttpKernel] fixed memory limit display in MemoryDataCollector (hhamon)

This PR was merged into the 2.3 branch.

Discussion
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[HttpKernel] fixed memory limit display in MemoryDataCollector

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | ~

Commits
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644f78d [HttpKernel] fixed memory limit display in MemoryDataCollector