[DRE-maint] Processed: set patch tag

[Debian Bug Tracking System]

Processing commands for control at bugs.debian.org:

> tags 890689 + patch
Bug #890689 [src:ruby-rgen] ruby-rgen FTBFS with ruby 2.5
Added tag(s) patch.
> thank you
Stopping processing here.

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-- 
890689: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=890689
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