fix 46233 saving imap attachments causes message to get downloaded again, sr=sspitzer

mailnews/imap/src/nsImapService.cpp

@@ -409,11 +409,25 @@ NS_IMETHODIMP nsImapService::OpenAttachment(const char *aContentType,
       rv = CreateStartOfImapUrl(uri.get(), getter_AddRefs(imapUrl), folder, aUrlListener, urlSpec, hierarchySeparator);
       if (NS_FAILED(rv)) 
         return rv;
+    
+      urlSpec.Append("/fetch>UID>");
+      urlSpec.Append(char(hierarchySeparator));
+    
+      nsXPIDLCString folderName;
+      GetFolderName(folder, getter_Copies(folderName));
+      urlSpec.Append((const char *) folderName);
+      urlSpec.Append(">");
+      urlSpec.Append(msgKey.get());
+      urlSpec.Append(uriMimePart.get());
+      
       if (uriMimePart)
       {
         nsCOMPtr<nsIMsgMailNewsUrl> mailUrl (do_QueryInterface(imapUrl));
         if (mailUrl)
+        {
+          mailUrl->SetSpec(urlSpec);
           mailUrl->SetFileName(nsDependentCString(aFileName));
+        }
         rv =  FetchMimePart(imapUrl, nsIImapUrl::nsImapOpenMimePart, folder, imapMessageSink,
           nsnull, aDisplayConsumer, msgKey, uriMimePart);
       }
@@ -606,18 +620,6 @@ nsresult nsImapService::FetchMimePart(nsIImapUrl * aImapUrl,
     nsCOMPtr<nsIURI> url = do_QueryInterface(aImapUrl);
     url->GetSpec(urlSpec);
     
-    PRUnichar hierarchySeparator = GetHierarchyDelimiter(aImapMailFolder); 
-    
-    urlSpec.Append("fetch>UID>");
-    urlSpec.Append(char(hierarchySeparator));
-    
-    nsXPIDLCString folderName;
-    GetFolderName(aImapMailFolder, getter_Copies(folderName));
-    urlSpec.Append((const char *) folderName);
-    urlSpec.Append(">");
-    urlSpec.Append(messageIdentifierList);
-    urlSpec.Append(mimePart);
-    
     // rhp: If we are displaying this message for the purpose of printing, we
     // need to append the header=print option.
     //
@@ -1196,7 +1198,8 @@ nsImapService::CreateStartOfImapUrl(const char * aImapURI, nsIImapUrl ** imapUrl
   PRInt32 port = IMAP_PORT;
   nsCOMPtr<nsIMsgIncomingServer> server;
   rv = aImapMailFolder->GetServer(getter_AddRefs(server));
-  if (NS_SUCCEEDED(rv)) {
+  if (NS_SUCCEEDED(rv)) 
+  {
     server->GetPort(&port);
     if (port == -1 || port == 0) port = IMAP_PORT;
   }
@@ -1204,8 +1207,7 @@ nsImapService::CreateStartOfImapUrl(const char * aImapURI, nsIImapUrl ** imapUrl
   // now we need to create an imap url to load into the connection. The url
   // needs to represent a select folder action. 
   rv = nsComponentManager::CreateInstance(kImapUrlCID, nsnull,
-    NS_GET_IID(nsIImapUrl), (void **)
-    imapUrl);
+    NS_GET_IID(nsIImapUrl), (void **) imapUrl);
   if (NS_SUCCEEDED(rv) && *imapUrl)
   {
     nsCOMPtr<nsIMsgMailNewsUrl> mailnewsUrl = do_QueryInterface(*imapUrl, &rv);