r16096 - gnucash/trunk/src/scm - Correct the checks for gnc:*finance-quote-{check, helper}* to use string-null?.

[Andreas Köhler]

Author: andi5
Date: 2007-05-18 10:54:24 -0400 (Fri, 18 May 2007)
New Revision: 16096
Trac: http://svn.gnucash.org/trac/changeset/16096

Modified:
   gnucash/trunk/src/scm/price-quotes.scm
Log:
Correct the checks for gnc:*finance-quote-{check,helper}* to use string-null?.

g-find-program-in-path returns a string---it may be empty but not #f or '().