12159 truss psflags printing is broken

*** 1628,1640 ****
--- 1628,1643 ----
                  (void) strlcat(str, "|PROC_SEC_NOEXECSTACK",
                      sizeof (str));
                  secflag_clear(&val, PROC_SEC_NOEXECSTACK);
          }
  
+         if (val != 0) {
                  len = strlen(str);
                  ptr = str + len;
                  (void) snprintf(ptr, sizeof (str) - len, "|%#x", val);
+         }
+ 
          outstring(pri, str + 1);
  }
  
  /*
   * Print a psecflags(2) delta