Fix bug and remove message on alloc error

modules/access/rist.c

@@ -184,13 +184,12 @@ static block_t *BlockRIST(stream_t *p_access, bool *restrict eof)
 
     // Prepare one large buffer (when we are behing in reading, otherwise it is the same size as what is being read)
     pktout = block_Alloc(i_total_size);
-    if (!pktout) {
-        msg_Err(p_access, "Couldn't allocate block");
+    if ( unlikely(pktout == NULL) ) {
         goto failed_cleanup;
     }
 
     size_t block_offset = 0;
-    for(size_t i = 0; i <= i_rist_items_index; ++i) {
+    for(size_t i = 0; i < i_rist_items_index; ++i) {
         memcpy(pktout->p_buffer + block_offset,  p_sys->rist_items[i]->payload,  p_sys->rist_items[i]->payload_len);
         block_offset +=  p_sys->rist_items[i]->payload_len;
         rist_receiver_data_block_free2(& p_sys->rist_items[i]);
@@ -200,7 +199,7 @@ static block_t *BlockRIST(stream_t *p_access, bool *restrict eof)
 
 failed_cleanup:
     if (i_total_size > 0) {
-        for (size_t i = 0; i <= i_rist_items_index; i++) {
+        for (size_t i = 0; i < i_rist_items_index; i++) {
             rist_receiver_data_block_free2(&p_sys->rist_items[i]);
         }
     }