Handle missing information when importing from aqbanking more gracefully.

The online_id used to match an aqbanking accountinfo to a gnucash account is the
concatenation of the bank code and account number found.  If the primer is NULL,
then fall back to "" instead of invalidating the whole id.

BP


git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@17405 57a11ea4-9604-0410-9ed3-97b8803252fd

src/import-export/aqbanking/gnc-ab-utils.c

@@ -428,13 +428,16 @@ gnc_ab_trans_to_gnc(const AB_TRANSACTION *ab_trans, Account *gnc_acc)
 static Account *
 gnc_ab_accinfo_to_gnc_acc(AB_IMEXPORTER_ACCOUNTINFO *acc_info)
 {
+    const gchar *bankcode, *accountnumber;
     gchar *online_id;
     Account *gnc_acc;
 
     g_return_val_if_fail(acc_info, NULL);
 
-    online_id = g_strconcat(AB_ImExporterAccountInfo_GetBankCode(acc_info),
-                            AB_ImExporterAccountInfo_GetAccountNumber(acc_info),
+    bankcode = AB_ImExporterAccountInfo_GetBankCode(acc_info);
+    accountnumber = AB_ImExporterAccountInfo_GetAccountNumber(acc_info);
+    online_id = g_strconcat(bankcode ? bankcode : "",
+                            accountnumber ? accountnumber : "",
                             (gchar*)NULL);
     gnc_acc = gnc_import_select_account(
         NULL, online_id, 1, AB_ImExporterAccountInfo_GetAccountName(acc_info),