Don't call getDocument() a second time

It doesn't (always?) like the extra arguments

package.json

@@ -66,7 +66,7 @@
         "c9.ide.language.javascript.eslint": "#d7b067e838",
         "c9.ide.language.javascript.tern": "#f9ba3813d7",
         "c9.ide.language.javascript.infer": "#9cf94f77be",
-        "c9.ide.language.jsonalyzer": "#1430f64b23",
+        "c9.ide.language.jsonalyzer": "#0a9d8d824a",
         "c9.ide.collab": "#10c224f9b8",
         "c9.ide.local": "#a6e689e33b",
         "c9.ide.find": "#e33fbaed2f",