10138 smatch fixes for usr/src/cmd/sgs

*** 831,846 ****
                  "%s: %s: no symbol table data\n", prog_name, filename);
                  return;
          }
          sym_size = sym_data->d_size;
  
-         if (p_scns == NULL) {
-                 (void) fprintf(stderr,
-                 "%s: %s: no section table data\n", prog_name, filename);
-                 return;
-         }
- 
          if (p_scns->p_shdr.sh_type == SHT_RELA) {
                  if (!n_flag && r_flag)
                          (void) printf("\n%s:\n", p_scns->scn_name);
                  if (!p_flag && (!n_flag && r_flag))
                          (void) printf("%-*s%-*s%-*s%s\n\n",
--- 831,840 ----