Compression fails for function expression in or expression

[arrix]

The line var f = function() {} || false causes compression failure.
Happens with both npm uglify-js@2.3.6 and the master tip b7adbca

$ echo 'var f = function() {} || false' | ./bin/uglifyjs -c -

.../UglifyJS2/lib/compress.js:602
                if (ex !== def) throw ex;
                                      ^
Error: Can't handle constant of type: object
    at make_node_from_constant

[rvanvelzen]

The problem seems to be this line, which returns an array. The other _eval methods do not.

[mishoo]

@rvanvelzen Right. I can't remember why I wrote that but it was obviously wrong...