[cups.bugs] [MOD] STR #2163: espgsMissingChar has no fallback

[twaugh.redhat]

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[STR New]

If a font has no 'space' character defined, and espgsMissingChar is set to
'space' (the default), substitution will fail and the entire job will be
aborted.

Why not try espgsMissingChar first, and if that fails fall back to
'.notdef'?

Link: http://www.cups.org/str.php?L2163
Version: 8.15.3