NULL string values when escaped backslashes are present

[measuredweighed]

This seems related to the fixes put in place for issue #24, but I'm now seeing NULL values returned for any string which contains an escaped backslash.

Given the following code I'd expect name to contain the value John\ Smith. Instead, it's returned as NULL.

JSON_Value *v = json_parse_string("{\"name\":\"John\\ Smith\"}");
JSON_Object *o = json_value_get_object(v);

const char *name = json_object_get_string(o, "name");
printf("name: %s\n", name);

[kgabis]

Hi, this is expected.
I've fixed the issue with parsing strings when using string setting functions, however it does not apply to this case. "{\"name\":\"John\\ Smith\"}" will become {"name":"John\ Smith"} before being passed to json_parse_string and, since it's not a valid json string, NULL will be returned.