#25 Undefined variables in exception handlers

[philipp]

Two exception handlers use undefined variables (in "src/usr/bin/diffuse"):

• _get_svk_repo() uses config but should use svkconfig (line 2648 in r432)
• Resources.getString() uses symbols but should use symbol (line 556 in r432)

Both cases were found by "pylint --errors-only".

[Derrick Moser]

These should now be fixed.