Some manual change to for-ranged loop.

Use "const auto&" where possible.

atom/common/node_bindings_mac.cc

@@ -54,7 +54,8 @@ void NodeBindingsMac::PollEvents() {
   // Wait for new libuv events.
   int r;
   do {
-    r = select(fd + 1, &readset, nullptr, nullptr, timeout == -1 ? nullptr : &tv);
+    r = select(fd + 1, &readset, nullptr, nullptr,
+               timeout == -1 ? nullptr : &tv);
   } while (r == -1 && errno == EINTR);
 }