Fix crashes in sdremote after suspend/resume cycles.

Change-Id: I0f64820887919386f266290ae8b7c53f8a0a5458

sd/source/ui/remotecontrol/BufferedStreamSocket.cxx

@@ -96,9 +96,9 @@ sal_Int32 BufferedStreamSocket::readLine( OString& aLine )
         else
             aRet = ::recv( mSocket, &aBuffer[aRead], 100, 0 );
 
-        if ( aRet == 0 )
+        if ( aRet <= 0 )
         {
-                return aRet;
+            return 0;
         }
         // Prevent buffer from growing massively large.
         if ( aRead > MAX_LINE_LENGTH )

sd/source/ui/remotecontrol/Receiver.cxx

@@ -52,6 +52,7 @@ void Receiver::Timeout()
     {
         std::vector< rtl::OString > aCommands( maExecQueue.front() );
         maExecQueue.pop_front();
+        if( !aCommands.empty() )
             executeCommand( aCommands );
         Start();
     }