The format patch included in PR ports/32017 is breaks formats such as

"0.000", trimming trailing non-zeros and adding back trailing zeros.
Fix both the original bug, which was caused by walking off the beginning
of the fractional part of the value and into the integer  part, as well
as the new bug, by terminating the trailing zero stripping when the first
non-zero character is encountered.  Also, correctly calculate the number
number of trailing zeros that should potentially be removed if the format
contains trailing text characters.

Bump PORTREVISION.

Reviewed by:	send-pr@oldach.net (Helge Oldach)

math/sc/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	sc
 PORTVERSION=	6.21
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	math
 MASTER_SITES=	ftp://gatekeeper.dec.com/pub/misc/
 EXTRACT_SUFX=	.tar.Z

math/sc/files/patch-ae

@@ -1,6 +1,15 @@
---- format.c.orig	Mon May 11 20:43:34 1992
-+++ format.c	Sat Dec  9 21:24:41 2000
-@@ -263,7 +263,6 @@
+--- format.c.orig	Mon May 11 11:43:34 1992
++++ format.c	Sun Jun 23 19:38:37 2002
+@@ -256,14 +256,14 @@
+ 
+         case '#':
+           width++;
++          zero_pad++;
+ 	  break;
+ 
+ 	case '0':
+-	  zero_pad = ++width;
++	  width++;
  	  break;
        }
      }
@@ -8,3 +17,12 @@
    }
    (void) sprintf(prtfmt, "%%.%dlf", width);
    (void) sprintf(mantissa, prtfmt, val);
+@@ -281,6 +281,8 @@
+     {
+       if (*cp == '0')
+         *cp = EOS;
++      else
++        break;
+     }
+   }
+