find_file and find_folder do not return null string if the file or folder resp. do not exist (coding typo)

svn: r21267

gramps/gen/utils/file.py

@@ -70,6 +70,9 @@ def find_file( filename):
             if os.path.isfile(fname):
                 return fname
         except UnicodeError:
+            pass
+ 
+    # not found
     return ''
 
 def find_folder( filename):
@@ -84,6 +87,9 @@ def find_folder( filename):
             if os.path.isdir(fname):
                 return fname
         except UnicodeError:
+            pass
+        
+    # not found
     return ''
 
 def get_unicode_path_from_file_chooser(path):