Merge branch 'hotfix-14909' into 'master'

hotfix-14909

See merge request !2005

dap-sdk @ d6b69346

-Subproject commit 9a18977ec883160e4579162170047d6ce391add1
+Subproject commit d6b6934683168160e7d25647ceef59d9439de2c3

modules/wallet/dap_chain_wallet_cache.c

@@ -693,7 +693,8 @@ static int s_save_tx_into_wallet_cache(dap_chain_t *a_chain, dap_chain_datum_tx_
             int l_prev_idx = ((dap_chain_tx_in_t*)it->data)->header.tx_out_prev_idx;
             if (dap_hash_fast_is_blank(&l_prev_tx_hash))
                 continue;
-            dap_chain_datum_tx_t *l_tx_prev = (dap_chain_datum_tx_t *)(a_chain->callback_datum_find_by_hash(a_chain, &l_prev_tx_hash, NULL, NULL)->data);
+            dap_chain_datum_t *l_prev_datum = a_chain->callback_datum_find_by_hash(a_chain, &l_prev_tx_hash, NULL, NULL);
+            dap_chain_datum_tx_t *l_tx_prev = l_prev_datum ? (dap_chain_datum_tx_t *)(l_prev_datum->data) : NULL;
             if (!l_tx_prev)
                 continue;
             uint8_t* l_prev_item = dap_chain_datum_tx_item_get_nth(l_tx_prev, TX_ITEM_TYPE_OUT, l_prev_idx);
@@ -935,7 +936,8 @@ static int s_save_tx_cache_for_addr(dap_chain_t *a_chain, dap_chain_addr_t *a_ad
             int l_prev_idx = ((dap_chain_tx_in_t*)l_tx_item)->header.tx_out_prev_idx;
             if (dap_hash_fast_is_blank(&l_prev_tx_hash))
                 continue;
-            dap_chain_datum_tx_t *l_tx_prev = (dap_chain_datum_tx_t *)(a_chain->callback_datum_find_by_hash(a_chain, &l_prev_tx_hash, NULL, NULL)->data);
+            dap_chain_datum_t *l_prev_datum = a_chain->callback_datum_find_by_hash(a_chain, &l_prev_tx_hash, NULL, NULL);
+            dap_chain_datum_tx_t *l_tx_prev = l_prev_datum ? (dap_chain_datum_tx_t *)(l_prev_datum->data) : NULL;
             if (!l_tx_prev)
                 continue;
             uint8_t* l_prev_item = dap_chain_datum_tx_item_get_nth(l_tx_prev, TX_ITEM_TYPE_OUT, l_prev_idx);