[ocrfeeder] Fix Unpaper's configured path

[Joaquim Manuel Pereira Rocha <jrocha src gnome org>]

commit 6b89768cd8d9c4039e0b55534d4e85b7172c8fe0
Author: Joaquim Rocha <jrocha igalia com>
Date:   Tue Feb 8 16:31:05 2011 +0100

    Fix Unpaper's configured path
    
    When Unpaper was not installed, it would set None as its path which
    would make the preferences dialog fail when OCRFeeder was run with
    no existing configurations.

 src/ocrfeeder/studio/configuration.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/ocrfeeder/studio/configuration.py b/src/ocrfeeder/studio/configuration.py
index 551d98d..41ad748 100644
--- a/src/ocrfeeder/studio/configuration.py
+++ b/src/ocrfeeder/studio/configuration.py
@@ -286,7 +286,7 @@ class ConfigurationManager(object):
                 BOXES_STROKE: (94, 156, 235, 250),
                 IMAGE_FILL: (0, 183, 0, 150),
                 WINDOW_SIZE: 'auto',
-                UNPAPER: getExecPath('unpaper'),
+                UNPAPER: getExecPath('unpaper') or '',
                 UNPAPER_USE_BLACK_FILTER: True,
                 UNPAPER_NOISE_FILTER_INTENSITY: 'auto',
                 UNPAPER_GRAY_FILTER_SIZE: 'auto',