[Remove failure entries from spell directory list
clinton@unknownlamer.org**20080427043557
 Some files fail to parse because they are not really spells; this
 causes a NIL to enter the list which trips up later parsing and
 conversion into objects
] hunk ./src/srd-import.lisp 363
-  (mapcar (lambda (spell-filename)
-	    (ignore-errors (scrape-spell spell-filename)))
-	  (fad:list-directory directory-path)))
+  (delete nil ; filter failed spell files that are not really spells
+	  (mapcar (lambda (spell-filename)
+		    (ignore-errors (scrape-spell spell-filename)))
+		  (fad:list-directory directory-path))))