refactor: make sure global.paramteres is used only inside config.c

src/kernel/config.c

@@ -1572,23 +1572,29 @@ bool markets_module(void)
 }
 
 void config_set(const char *key, const char *value) {
-    set_param(&global.parameters, key, value);
+    set_param(&global.parameters_, key, value);
 }
 
 const char *config_get(const char *key) {
-    return get_param(global.parameters, key);
+    return get_param(global.parameters_, key);
 }
 
 int config_get_int(const char *key, int def) {
-    return get_param_int(global.parameters, key, def);
+    return get_param_int(global.parameters_, key, def);
 }
 
 double config_get_flt(const char *key, double def) {
-    return get_param_flt(global.parameters, key, def);
+    return get_param_flt(global.parameters_, key, def);
 }
 
 bool config_token(const char *key, const char *tok) {
-    return !!check_param(global.parameters, key, tok);
+    return !!check_param(global.parameters_, key, tok);
+}
+
+void free_config(void) {
+    global.functions.maintenance = NULL;
+    global.functions.wage = NULL;
+    free_params(&global.parameters_);
 }
 
 /** releases all memory associated with the game state.

src/kernel/config.h

@@ -246,7 +246,7 @@ extern "C" {
         const char *gamename;
         struct attrib *attribs;
         unsigned int data_turn;
-        struct param *parameters;
+        struct param *parameters_;
         void *vm_state;
         int data_version; /* TODO: eliminate in favor of gamedata.version */
         struct _dictionary_ *inifile;
@@ -297,6 +297,7 @@ extern "C" {
     void init_parameters(struct locale *lang);
 
     void free_gamedata(void);
+    void free_config(void);
 
     extern struct helpmode helpmodes[];
     extern const char *parameters[];

src/tests.c

@@ -78,9 +78,7 @@ void test_cleanup(void)
 
     free_terrains();
     free_resources();
-    global.functions.maintenance = NULL;
+    free_config();
-    global.functions.wage = NULL;
-    free_params(&global.parameters);
     default_locale = 0;
     close_orders();
     free_locales();