String concatenation breaks extraction for translation

In the file ogginfo/ogginfo2.c there is this code

warn(_("WARNING: Expected frame %" I64FORMAT 
       ", got %" I64FORMAT "\n"), 
       inf->framenum_expected, framenum);

The xgettext tool can't handle that, since it doesn't know what I64FORMAT will become. Only "WARNING: Expected frame %" turns up in the message file. (And that will remain unused; that is not what the argument will be at run time.)

There are a few other similar cases in the same file, search for I64FORMAT.