[TTS] fix for #4012 and #4100

[itzsimpl]

Signed-off-by: Iztok Lebar Bajec [email protected]

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[lgtm-com[bot]]

This pull request introduces 1 alert when merging b7bfe927374d7ea1b4bf9eb91799807bfe9493b5 into 8bf31221202d4ceed96889b9d82b9517f6c6ab77 - view on LGTM.com

new alerts:

• 1 for Unused import

[itzsimpl]

@blisc @okuchaiev could someone review?

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