fix for #63994, fix string used in news error alert. sr=bienvenu.

mailnews/news/resources/locale/en-US/news.properties

@@ -44,7 +44,6 @@ downloadingHeaders=Downloading %S of %S headers
 downloadingArticles=Downloading articles %S-%S
 bytesReceived=Downloading newsgroups: %S received (%SK read at %SK/sec)
 checkingForNewNews=Checking newsgroup %S of %S for new messages
-newsError=NEWS ERROR:  
 
 # LOCALIZATION NOTE (Error -304): In the following item, don't translate "NNTP"
 # Error - server error

mailnews/news/src/nsNNTPProtocol.cpp

@@ -5467,12 +5467,14 @@ nsNNTPProtocol::AlertError(PRInt32 errorCode, const char *text)
 
     nsAutoString alertText;
     nsXPIDLString str;
-    rv = GetNewsStringByName("newsError", getter_Copies(str));
+    rv = GetNewsStringByID(MK_NNTP_ERROR_MESSAGE, getter_Copies(str));
     NS_ENSURE_SUCCESS(rv,rv);
 	alertText.Append(str);
 
-	  if (text)
-		  alertText.AppendWithConversion(text);
+	if (text) {
+	    alertText.Append(NS_LITERAL_STRING(" ").get());
+		alertText.AppendWithConversion(text);
+    }
 
 	rv = dialog->Alert(nsnull, alertText.GetUnicode());
     NS_ENSURE_SUCCESS(rv, rv);