[daip] CLCOR / ANTC problem found

[Walter Brisken]

On my ride home from work I thought about it and figured the bug must be 
caused by ICODE = 20 (ANTC) not being handled further down the code, 
beyond the SU table fix.  I found the GO TO on line 983:

 200  FIXCNT = FIXCNT + 1
      IANT = CLRECI(ANTCL)
      GO TO (250,300,300,350,400,280,450,500,550,600,610,620,630,  [line 983]
     *       250,640,850,870,890,890),ICODE

which had no case for ICODE = 20.  Probably appending 600 to the list of 
target line numbers would fix my problem (or setting the value of ICODE 
to 10 around line 888)

Please review the above fix and let me know if you agree with my analysis.  
I'll be ready to test the fix ASAP.

Thanks,

Walter