[Bug 1545206] New: xmobar is using arch-dependent BuildRequires

https://bugzilla.redhat.com/show_bug.cgi?id=1545206

Bug ID: 1545206
           Summary: xmobar is using arch-dependent BuildRequires
           Product: Fedora
           Version: rawhide
         Component: xmobar
          Priority: high
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail]
            Blocks: 1545161

xmobar is using %{?_isa} in BuildRequires which is prohibited by Packaging
Guidelines:
https://fedoraproject.org/wiki/Packaging:Guidelines#BuildRequires_and_.25.7B....
Please fix it ASAP.

Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1545161
[Bug 1545161] Packages which use arch-dependent BuildRequires