#523 reading atom properties is broken n 12.2

[Angel Herraez]

I am finding broken behaviour in extracting atom properties. This fails in Jmol 12.2.6 to 12, used to work in former versions (not sure which one), works in 12.3

Case example:

load $aspirin;
print {C1}.atomNo;
print {C1}.xyz;

[Bob Hanson]

Ouch! 12.2.3-12.2.12 have {xxx}.yyyy broken. Fixed for 12.2.13.