fix DEBUG_MAX_ARRAY_LENGTH

Author: slavaGanzin

src/node.js

@@ -38,7 +38,7 @@ exports.inspectOpts = Object.keys(process.env).filter(function (key) {
   var prop = key
     .substring(6)
     .toLowerCase()
-    .replace(/_([a-z])/, function (_, k) { return k.toUpperCase() });
+    .replace(/_([a-z])/g, function (_, k) { return k.toUpperCase() });
 
   // coerce string value into JS value
   var val = process.env[key];