Additional semicolon it TSInterfaceBody

[coderaiser]

When AST with TSInterfaceBody changed, it produced additional semicolon, which is not valid code:

const {print, parse} = require('recast');
const code = [
    "interface Hello {",
    "  'hello': any;",
    "  'hello': string;",
    "}",
].join(eol);
    
const ast = recast.parse(code, {
    parser: require('recast/parser/typescript'),
});
    
ast.program.body[0].body.body.pop();
recast.print(ast).code;
// returns
"interface Hello {",
"  'hello': any;;",
"}",

Also I want to mention that recast.prettyPrint not cover this case, so it's not tested with print.