fix double variable assignment in ContainerDebugCommand
merged branch zakharovvi/ContainerDebugCommand_fix_double_assignment (PR #8078)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #8078).

Discussion
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[FrameworkBundle] fix double variable assignment in ContainerDebugComman...

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

Commits
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9d1a219 [FrameworkBundle] fix double variable assignment in ContainerDebugCommand