[Discuss-gnuradio] ofdm_sync_sc_cfb missing square operation in "delay path"

Hi Martin,
I was looking ofdm_sync_sc_cfb block, I found in delay path, "delay_magsquare" directly connect to "delay_normalize", but according S&C's paper, "delay_magsquare" need do square operation like "Energy Path".
M(d)=|P(d)|^2/(R(d))^2

Seems in your code that numerator P(d) missing ^2,
but when I add a square operation in P(d), the ofdm_loopback's result was wrong. 

--   Thanks  Tiankun