malloc s option

[Ted Unangst]

According the man page, little letters undo big letters.  's' is missing 
from the code, however.

Index: stdlib/malloc.c
===================================================================
RCS file: /home/tedu/cvs/src/lib/libc/stdlib/malloc.c,v
retrieving revision 1.137
diff -u -r1.137 malloc.c
--- stdlib/malloc.c     20 May 2011 20:02:08 -0000      1.137
+++ stdlib/malloc.c     18 Jun 2011 15:44:44 -0000
@@ -548,6 +548,10 @@
                        case 'R':
                                mopts.malloc_realloc = 1;
                                break;
+                       case 's':
+                               mopts.malloc_freeprot = mopts.malloc_junk = 0;
+                               mopts.malloc_guard = 0;
+                               break;
                        case 'S':
                                mopts.malloc_freeprot = mopts.malloc_junk = 1;
                                mopts.malloc_guard = MALLOC_PAGESIZE;