Bug#796326: nmu: gtkspellmm_3.0.3+dfsg-1+b1 on arm64

[Edmund Grimley Evans <edmund.grimley.evans@gmail.com>]

Package: release.debian.org
User: release.debian.org@packages.debian.org
Usertags: binnmu

I think gtkspellmm needs a binNMU on arm64.

https://buildd.debian.org/status/package.php?p=gimagereader&suite=sid says:

Dependency installability problem for gimagereader on arm64:

gimagereader build-depends on:
- arm64:libgtkmm-3.0-dev
arm64:libgtkmm-3.0-dev depends on:
- arm64:libgtkmm-3.0-1v5 (= 3.16.0-2)
gimagereader build-depends on:
- arm64:libgtkspellmm-3.0-dev
arm64:libgtkspellmm-3.0-dev depends on:
- arm64:libgtkspellmm-3.0-0 (= 3.0.3+dfsg-1+b1)
arm64:libgtkspellmm-3.0-0 depends on:
- arm64:libgtkmm-3.0-1 (>= 3.16.0)
arm64:libgtkmm-3.0-1v5 conflicts with:
- arm64:libgtkmm-3.0-1