Add diagnostic print to debug agent if it fails to open port

Review URL: http://codereview.chromium.org/549061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3621 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/debug-agent.cc

@@ -54,10 +54,12 @@ void DebuggerAgent::Run() {
   while (!bound && !terminate_) {
     bound = server_->Bind(port_);
 
-    // If an error occoured wait a bit before retrying. The most common error
+    // If an error occurred wait a bit before retrying. The most common error
     // would be that the port is already in use so this avoids a busy loop and
     // make the agent take over the port when it becomes free.
     if (!bound) {
+      PrintF("Failed to open socket on port %d, "
+          "waiting %d ms before retrying\n", port_, kOneSecondInMicros / 1000);
       terminate_now_->Wait(kOneSecondInMicros);
     }
   }