Service Metadata fails when extents with NaN value appear

[raykendo]

ESRI Netherlands reported that Metadata display failed at a specific service. Upon inspection of the map service JSON, we discovered the extents had NaN values. JSON.parse choked on the NaN values, since there were no quotes around the text.
{ "xmin":NaN, "xmax":NaN, "ymin":NaN, "ymax":NaN, "spatialReference": {"wkid": 1234} }

[raykendo]

This issue should be fixed in 1.2.6... hopefully. Will have to find a service to test.