Eyes of the Overworld grammar

Putting on the Eyes while blind causes sight to be regained, which in
turn causes xname() to set the dknown bit and start using the previously
unseen object's name.  But obj_is_pname() was being called before xname in
the "you are now wearing ..." message, while dknown was still clear.  So
obj_is_pname thought the name was being suppressed and returned false,
resulting in "an Eyes" instead of "the Eyes".  Fix is to call xname first.

doc/fixes34.4

@@ -220,6 +220,7 @@ create_object() created lizard corpses without timers and troll corpses with
 when a potion of acid was dropped into water and exploded, nethack would
 	continue to use already freed memory and later might panic or crash
 when jumping over an already seen trap, use an() to get appropriate grammar
+fix bad grammar when putting on not-yet-seen Eyes of the Overworld while blind
 
 
 Platform- and/or Interface-Specific Fixes