Cleanup to procarray.c

I have applied the following cleanup to procarray.c.

--
  Bruce Momjian  <bruce@momjian.us>          http://momjian.us
  EnterpriseDB                               http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +
Index: src/backend/storage/ipc/procarray.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/storage/ipc/procarray.c,v
retrieving revision 1.21
diff -c -c -r1.21 procarray.c
*** src/backend/storage/ipc/procarray.c    16 Jan 2007 13:28:56 -0000    1.21
--- src/backend/storage/ipc/procarray.c    23 Mar 2007 03:14:10 -0000
***************
*** 590,595 ****
--- 590,600 ----

      xmax = ReadNewTransactionId();

+     /*
+      * Spin over procArray checking xid, xmin, and subxids.  The goal is
+      * to gather all active xids, find the lowest xmin, and try to record
+      * subxids.
+      */
      for (index = 0; index < arrayP->numProcs; index++)
      {
          PGPROC       *proc = arrayP->procs[index];
***************
*** 614,621 ****

          if (TransactionIdPrecedes(xid, xmin))
              xmin = xid;
!         snapshot->xip[count] = xid;
!         count++;

          /* Update globalxmin to be the smallest valid xmin */
          xid = proc->xmin;
--- 619,625 ----

          if (TransactionIdPrecedes(xid, xmin))
              xmin = xid;
!         snapshot->xip[count++] = xid;

          /* Update globalxmin to be the smallest valid xmin */
          xid = proc->xmin;