wishing fix (obj->dknown)

A change made 5 or 6 weeks ago that was meant to enhance tracking of
artifact creation had an unintended side-effect of making every object
obtained via wishing have its dknown flag be set.  That made them
behave differenly from items picked up off the floor, so revert to the
old behavior.

doc/fixes3-7-0.txt

@@ -1156,6 +1156,8 @@ if the repeat command was used after prefix+command, only the command part got
 	repeated
 the change for repeat after prefix+command would result in a crash if repeat
 	was attempted after an unassigned key
+items obtained via wishing while blind were erroneously being marked as 'seen
+	up close' so behaving differently from items picked up off the floor
 
 curses: 'msg_window' option wasn't functional for curses unless the binary
 	also included tty support

src/zap.c

@@ -5647,14 +5647,9 @@ makewish(void)
         return;
     }
 
-    if (otmp != &cg.zeroobj) {
-        /* treat as if seen up close even if hero is blind and hasn't
-           touched it yet */
-        otmp->dknown = 1;
-
-        if (otmp->oartifact)
-            /* update artifact bookkeeping; doesn't produce a livelog event */
-            artifact_origin(otmp, ONAME_WISH | ONAME_KNOW_ARTI);
+    if (otmp->oartifact) {
+        /* update artifact bookkeeping; doesn't produce a livelog event */
+        artifact_origin(otmp, ONAME_WISH | ONAME_KNOW_ARTI);
     }
 
     /* wisharti conduct handled in readobjnam() */