take in account schema may be boolean so i can not inline change schema

i can only assign value

jsonform.gadget.js

@@ -385,11 +385,11 @@
           case "additionalItems":
           case "contains":
           case "propertyNames":
-            mergeSchemas(x[key], y[key], true);
+            x[key] = mergeSchemas(x[key], y[key], true);
             break;
           case "items":
             // XXX items can be array
-            mergeSchemas(x[key], y[key], true);
+            x[key] = mergeSchemas(x[key], y[key], true);
             break;
           case "contentEncoding":
           case "contentMediaType":
@@ -427,7 +427,7 @@
             for (p in y[key]) {
               if (y[key].hasOwnProperty(p)) {
                 if (x[key].hasOwnProperty(p)) {
-                  mergeSchemas(x[key][p], y[key][p], true);
+                  x[key][p] = mergeSchemas(x[key][p], y[key][p], true);
                 } else {
                   x[key][p] = y[key][p];
                 }