Architecture specific change in rpms/icecat.git

The package rpms/icecat.git has added or updated architecture specific content in its
spec file (ExclusiveArch/ExcludeArch or %ifarch/%ifnarch) in commit(s):
http://pkgs.fedoraproject.org/cgit/rpms/icecat.git/commit/?id=5f3c8bb8db4fa5....

Change:
+%ifnarch %{arm}

Thanks.