fix for bug #190044. too many status messages for

pop3, nntp, and smtp.  just do what darin did for imap.
thanks to kazhik@mozilla.gr.jp for the initial patch.
r=cavin, sr=bienvenu

mailnews/base/util/nsMsgProtocol.cpp

@@ -669,16 +669,21 @@ NS_IMETHODIMP
 nsMsgProtocol::OnTransportStatus(nsITransport *transport, nsresult status,
                                  PRUint32 progress, PRUint32 progressMax)
 {
-  if (mProgressEventSink && !(mLoadFlags & LOAD_BACKGROUND)) {
-    nsCAutoString host;
-    if (m_url)
-      m_url->GetHost(host);
-    mProgressEventSink->OnStatus(this, nsnull, status, NS_ConvertUTF8toUCS2(host).get()); 
+  if (mProgressEventSink && !(mLoadFlags & LOAD_BACKGROUND))
+  {
+    // these transport events should not generate any status messages
     if (status == nsISocketTransport::STATUS_RECEIVING_FROM ||
-        status == nsISocketTransport::STATUS_SENDING_TO ||
-        status == nsITransport::STATUS_READING ||
-        status == nsITransport::STATUS_WRITING)
+        status == nsISocketTransport::STATUS_SENDING_TO)
+    {
       mProgressEventSink->OnProgress(this, nsnull, progress, progressMax);
+    }
+    else
+    {
+      nsCAutoString host;
+      if (m_url)
+        m_url->GetHost(host);
+      mProgressEventSink->OnStatus(this, nsnull, status, NS_ConvertUTF8toUCS2(host).get()); 
+    }
   } 
   return NS_OK;
 }