More corrections to extresist, which now appears to work if used

with ext2spice without the hierarchy option.  More work needed to
produce correct hierarchical output and to support extraction
devices other than the old "fet" record.

extflat/EFvisit.c

@@ -300,6 +300,8 @@ efVisitDevs(hc, ca)
     Dev *dev;
     float scale;
     Transform t;
+    HashSearch hs;
+    HashEntry *he;
 
     if (def->def_flags & DEF_SUBCIRCUIT) return 0;
 
@@ -311,15 +313,17 @@ efVisitDevs(hc, ca)
     t = hc->hc_trans;
   
     /* Visit our own devices */
-    for (dev = def->def_devs; dev; dev = dev->dev_next)
+
+    HashStartSearch(&hs);
+    while (he = HashNext(&def->def_devs, &hs))
     {
+	dev = (Dev *)HashGetValue(he);
 	if (efDevKilled(dev, hc->hc_hierName))
 	    continue;
 
 	if ((*ca->ca_proc)(dev, hc->hc_hierName, scale, &t, ca->ca_cdata))
 	    return 1;
     }
-
     return 0;
 }