Mark some QofLogModules as potentially unused

- __attribute__((unused)) for C
- [[maybe_unused]] for cpp

gnucash/gnome/dialog-fincalc.c

@@ -93,7 +93,7 @@ static unsigned int periods[] =
 };
 
 /* This static indicates the debugging module that this .o belongs to.  */
-static QofLogModule log_module = GNC_MOD_GUI;
+__attribute__((unused)) static QofLogModule log_module = GNC_MOD_GUI;
 
 
 /** Prototypes **********************************************************/

gnucash/gnome/window-autoclear.c

@@ -37,7 +37,7 @@
 
 #define WINDOW_AUTOCLEAR_CM_CLASS "window-autoclear"
 
-static QofLogModule log_module = GNC_MOD_GUI;
+__attribute__((unused)) static QofLogModule log_module = GNC_MOD_GUI;
 
 /** STRUCTS *********************************************************/
 struct _AutoClearWindow

gnucash/gnucash-cli.cpp

@@ -45,7 +45,7 @@
 namespace bl = boost::locale;
 
 /* This static indicates the debugging module that this .o belongs to.  */
-static QofLogModule log_module = GNC_MOD_GUI;
+[[maybe_unused]] static QofLogModule log_module = GNC_MOD_GUI;
 
 namespace Gnucash {
 

gnucash/import-export/aqb/dialog-ab-select-imexporter.c

@@ -32,7 +32,7 @@
 #include "dialog-ab-select-imexporter.h"
 #include <dialog-utils.h>
 
-static QofLogModule log_module = G_LOG_DOMAIN;
+__attribute__((unused)) static QofLogModule log_module = G_LOG_DOMAIN;
 
 struct _GncABSelectImExDlg
 {

libgnucash/backend/sql/gnc-budget-sql.cpp

@@ -51,7 +51,7 @@
 #define AMOUNTS_TABLE "budget_amounts"
 #define AMOUNTS_TABLE_VERSION 1
 
-static QofLogModule log_module = G_LOG_DOMAIN;
+[[maybe_unused]] static QofLogModule log_module = G_LOG_DOMAIN;
 
 #define BUDGET_MAX_NAME_LEN 2048
 #define BUDGET_MAX_DESCRIPTION_LEN 2048

libgnucash/backend/sql/gnc-commodity-sql.cpp

@@ -44,7 +44,7 @@
 #include "splint-defs.h"
 #endif
 
-static QofLogModule log_module = G_LOG_DOMAIN;
+[[maybe_unused]] static QofLogModule log_module = G_LOG_DOMAIN;
 
 static  gpointer get_quote_source_name (gpointer pObject);
 static void set_quote_source_name (gpointer pObject,  gpointer pValue);

libgnucash/backend/sql/gnc-order-sql.cpp

@@ -45,7 +45,7 @@
 
 #define _GNC_MOD_NAME   GNC_ID_ORDER
 
-static QofLogModule log_module = G_LOG_DOMAIN;
+[[maybe_unused]] static QofLogModule log_module = G_LOG_DOMAIN;
 
 #define TABLE_NAME "orders"
 #define TABLE_VERSION 1

libgnucash/backend/xml/gnc-transaction-xml-v2.cpp

@@ -46,7 +46,7 @@
 
 #include "sixtp-dom-parsers.h"
 
-static const QofLogModule log_module = G_LOG_DOMAIN;
+[[maybe_unused]] static const QofLogModule log_module = G_LOG_DOMAIN;
 const gchar* transaction_version_string = "2.0.0";
 
 static void