totemconfig: Suppress coverity unused_value errors

All of unused_value error instances are actually example of good
defense programming style and removing them would make code worse and
less ready for future changes so add coverity specific comment
to suppress these errors.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>

exec/totempg.c

@@ -942,6 +942,7 @@ static int mcast_msg (
 			fragment_size += copy_len;
 			mcast_packed_msg_lens[mcast_packed_msg_count] += copy_len;
 			next_fragment = 1;
+			// coverity[UNUSED_VALUE:SUPPRESS] defensive programming
 			copy_len = 0;
 			copy_base = 0;
 			i++;
@@ -1011,6 +1012,7 @@ static int mcast_msg (
 			 * If the iovec all fit, go to the next iovec
 			 */
 			if ((copy_base + copy_len) == iovec[i].iov_len) {
+				// coverity[UNUSED_VALUE:SUPPRESS] defensive programming
 				copy_len = 0;
 				copy_base = 0;
 				i++;

lib/cpg.c

@@ -499,6 +499,7 @@ cs_error_t cpg_dispatch (
 						qb_list_del (&assembly_data->list);
 						free(assembly_data->assembly_buf);
 						free(assembly_data);
+						// coverity[UNUSED_VALUE:SUPPRESS] defensive programming
 						assembly_data = NULL;
 					}