Fix comment from earlier commit.

runtime/bin/socket_macos.cc

Index: runtime/bin/socket_macos.cc
diff --git a/runtime/bin/socket_macos.cc b/runtime/bin/socket_macos.cc
index f468b37911f46a4ba4c17ed26b332b5908ae3b02..66737cd722606e81b459bb7e919ba5e11ea00d04 100644
--- a/runtime/bin/socket_macos.cc
+++ b/runtime/bin/socket_macos.cc
@@ -324,8 +324,8 @@ intptr_t ServerSocket::CreateBindListen(RawAddr addr,
 
   // Test for invalid socket port 65535 (some browsers disallow it).
   if (port == 0 && Socket::GetPort(fd) == 65535) {
-    // Don't close fd until we have created new. By doing that we ensure another
-    // port.
+    // Don't close the socket until we have created a new socket, ensuring
+    // that we do not get the bad port number again.
     intptr_t new_fd = CreateBindListen(addr, 0, backlog, v6_only);
     int err = errno;
     VOID_TEMP_FAILURE_RETRY(close(fd));