optimize unbind function

.travis.yml

@@ -15,7 +15,7 @@ env:
     - TARGET=interp
     - TARGET=macro
       # optional: MACROFLAGS: specify the flags that are unique to building/running with --macro arguments
-    - TARGET=js TOOLCHAIN=default HXFLAGS_EXTRA="-D nodejs -js js.js" # target is tested by node.js
+    - TARGET=js TOOLCHAIN=default # target is tested by node.js
       # optional: FILENAME
       # optional: NODECMD: set the command to be run by nodejs
     - TARGET=js TOOLCHAIN=browser # target is tested by browsers / phantomjs

src/bindx/BindxExt.hx

@@ -71,7 +71,7 @@ class BindExt {
         var chain = prepareBindChain(fields, listener, expr.pos);
         
         var res = macro
-            $b { chain.bind.concat(chain.init).concat([macro function __unbind__():Void { $b { chain.unbind } }]) };
+            $b { chain.bind.concat(chain.init).concat([macro function __unbind__():Void $b { chain.unbind } ]) };
         trace(new Printer().printExpr(res));
         return res;
     }