Bug#510940: better handle unrecognized date formats; patch from Charles Day <cedayiv gmail com>.

BP


git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@16905 57a11ea4-9604-0410-9ed3-97b8803252fd

src/import-export/qif-import/qif-file.scm

@@ -675,7 +675,8 @@
     ;; list of acceptable formats.
 
     (cond 
-     ((null? formats) 
+     ((or (not formats)
+          (null? formats))
       (errormsg errortype "Data for number or date does not match a known format.")
       (set! retval #f)
       (set! do-parsing #f))