Correct code to match documentation of Binary.check_utf8_package

Signed-off-by: NChris Lamb <lamby@debian.org>

daklib/binary.py

@@ -248,12 +248,16 @@ class Binary(object):
                     except:
                         print >> sys.stderr, "E: %s has non-unicode filename: %s" % (package,tarinfo.name)
 
+                result = True
+
             except:
                 traceback.print_exc()
                 result = False
 
             os.chdir(cwd)
 
+        return result
+
 __all__.append('Binary')
 
 def copy_temporary_contents(package, version, archname, deb, reject, session=None):