Minor correction to device extraction using the new device structure

format with multiple devices per magic tile type.  The code was left
incompatible with diodes defined with one terminal as substrate
(and therefore no source/drain-like types connecting to the device
type).  This has been fixed.

extract/ExtBasic.c

@@ -2704,7 +2704,7 @@ extTransPerimFunc(bp)
 		break;
 	    }
 	}
-
+	if (toutside == TT_SPACE) break;
 	if (SDterm) break;
 	if (extConnectsTo(tinside, toutside, ExtCurStyle->exts_nodeConn))
 	{
@@ -2715,6 +2715,7 @@ extTransPerimFunc(bp)
 
 	/* Did not find a matching terminal, so see if a different extraction	*/
 	/* record matches the terminal type.					*/
+
 	devptr = extDevFindMatch(devptr, tinside);
 	if (devptr == deventry) devptr = NULL;
     }