Remove unneeded function wrappers

lib/net.js

@@ -287,12 +287,10 @@ function setImplmentationMethods (self) {
       // calling emit() after recvMsg() has been called again and end up
       // emitting null (or another FD).
       if (recvMsg.fd !== null) {
-        (function () {
-          var fd = recvMsg.fd;
-          process.nextTick(function () {
-            self.emit('fd', fd);
-          });
-        })();
+        var fd = recvMsg.fd;
+        process.nextTick(function () {
+          self.emit('fd', fd);
+        });
       }
 
       return bytesRead;

src/node.js

@@ -616,9 +616,7 @@ if (process.argv[1]) {
   }
   // REMOVEME: nextTick should not be necessary. This hack to get
   // test/simple/test-exception-handler2.js working.
-  process.nextTick(function() {
-    module.runMain();
-  });
+  process.nextTick(module.runMain);
 
 } else if (process._eval) {
     // -e, --eval

test/message/undefined_reference_in_new_context.out

@@ -9,7 +9,6 @@ ReferenceError: foo is not defined
     at Module._compile (node.js:*)
     at Object..js (node.js:*)
     at Module.load (node.js:*)
-    at Object.runMain (node.js:*)
     at Array.<anonymous> (node.js:*)
     at EventEmitter._tickCallback (node.js:*)
     at node.js:*