6645 sgsmsg relies on undefined behaviour of loop-scoped variables

*** 663,672 ****
--- 663,673 ----
  {
          char    buffer[LINE_MAX], * token;
          uint_t  bufsize;
          char    *token_buffer;
          int     escape = 0;
+         int     len = 0;
  
          if ((token_buffer = malloc(LINE_MAX)) == 0) {
                  (void) fprintf(stderr, Errmsg_nmem, strerror(errno));
                  return (1);
          }
*** 674,684 ****
  
          line = 1;
  
          while ((token = fgets(buffer, LINE_MAX, fddesc)) != NULL) {
                  char    defn[PATH_MAX], * _defn, * str;
-                 int     len;
  
                  switch (*token) {
                  case '#':
                  case '$':
                          if (escape) {
--- 675,684 ----