Fix complex member printing for DynamicDataHelper (backport #2957)

[mergify]

This is an automatic backport of pull request #2957 done by Mergify.
Cherry-pick of 78473a0 has failed:

On branch mergify/bp/2.6.x/pr-2957
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	both modified:   src/cpp/dynamic-types/DynamicDataHelper.cpp

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[MiguelCompany]

@methylDragon Would you mind resolving the conflicts here?

[methylDragon]

I think that looks like the only conflict?

[MiguelCompany]

@richiprosima Please test this

[methylDragon]

Looks like uncrustify is unhappy?

There's another uncrustify warning occuring in line 61. I don't have access to edit that.

[MiguelCompany]

Uncrustify is now happy, and build was successful. Going in.