FT8: Make the Fast decode setting Faster.

lib/ft8/ft8b.f90

@@ -403,14 +403,12 @@ subroutine ft8b(dd0,newdat,nQSOProgress,nfqso,nftx,ndepth,nzhsym,lapon,     &
      dmin=0.0
      norder=2
      maxosd=2
-     if(ndepth.lt.3) maxosd=1
-     if(abs(nfqso-f1).le.napwid .or. abs(nftx-f1).le.napwid .or. ncontest.eq.7) then
+     if(ndepth.eq.2) maxosd=1
+     if(ndepth.eq.1) maxosd=-1
+     if(ndepth.ge.2 .and.         &
+        (abs(nfqso-f1).le.napwid .or. abs(nftx-f1).le.napwid .or. ncontest.eq.7)) then
         maxosd=2
      endif
-     if(nagain) then
-        norder=3
-        maxosd=1
-     endif
      call timer('dec174_91 ',0)
      Keff=91
      call decode174_91(llrz,Keff,maxosd,norder,apmask,message91,cw,  &