Unterminated string with role name

[Grzegorz K.]

I found that GRANT USAGE ON SCHEMA foo TO "role-1"; is rendered in a weird way, looks like pgquarrel is trying to escape double quotes and does it in incomplete way like this: GRANT USAGE ON SCHEMA foo TO "\"role-1\";

In cases like this it should be rendered like this: GRANT USAGE ON SCHEMA foo TO "role-1";

[Grzegorz K.]

I fixed this within pull request #63

[Euler Taveira]

commit cff4f0b fixes this issue.