string fixes r=waterson

mailnews/absync/src/nsAbSync.cpp

@@ -1705,7 +1705,7 @@ nsAbSync::ExtractCurrentLine()
           ( (*mProtocolOffset != CR) && (*mProtocolOffset != LF) )
         )
   {
-    extractString.Append(NS_ConvertASCIItoUCS2(mProtocolOffset), 1);
+    extractString.Append(PRUnichar(*mProtocolOffset));
     mProtocolOffset++;
   }
 

mailnews/absync/src/nsAbSyncPostEngine.cpp

@@ -232,7 +232,7 @@ nsAbSyncPostEngine::OnDataAvailable(nsIChannel * aChannel, nsISupports * ctxt, n
   if (NS_FAILED(rv)) return rv;
 
   // write to the protocol response buffer...
-  mProtocolResponse.Append(NS_ConvertASCIItoUCS2(buf), readLen);
+  mProtocolResponse.Append(NS_ConvertASCIItoUCS2(buf, readLen));
   PR_FREEIF(buf);
   mTotalWritten += readLen;