Used UNUSED macro instead of (void) where applicable

src/ai/formula/function_table.cpp

@@ -892,7 +892,7 @@ DEFINE_WFL_FUNCTION(set_unit_var, 3, 3)
 
 DEFINE_WFL_FUNCTION(fallback, 0, 1)
 {
-	(void)fdb;
+	UNUSED(fdb);
 	// The parameter is not used, but is accepted for legacy compatibility
 	if(args().size() == 1 && args()[0]->evaluate(variables).as_string() != "human")
 		return variant();

src/campaign_server/campaign_server.cpp

@@ -428,7 +428,7 @@ void server::fire(const std::string& hook, const std::string& addon)
 	}
 
 #if defined(_WIN32)
-	(void)addon;
+	UNUSED(addon);
 	ERR_CS << "Tried to execute a script on an unsupported platform\n";
 	return;
 #else

src/formula/function.cpp

@@ -608,8 +608,8 @@ DEFINE_WFL_FUNCTION(exp, 1, 1)
 
 DEFINE_WFL_FUNCTION(pi, 0, 0)
 {
-	(void)variables;
-	(void)fdb;
+	UNUSED(variables);
+	UNUSED(fdb);
 	return variant(pi<double>(), variant::DECIMAL_VARIANT);
 }
 

src/gui/dialogs/lua_interpreter.cpp

@@ -231,7 +231,7 @@ public:
 #endif
 	void add_to_history (const std::string& str) {
 		prefix_ = "";
-		(void) str;
+		UNUSED(str);
 #ifdef HAVE_HISTORY
 		add_history(str.c_str());
 #endif
@@ -293,7 +293,7 @@ public:
 
 		// reset, set history to the end and prefix_ to empty, and return the current prefix_ for the user to edit
 		end_of_history_ = true;
-		(void) direction;
+		UNUSED(direction);
 		std::string temp = prefix_;
 		prefix_ = "";
 		return temp;
@@ -357,7 +357,7 @@ public:
 		cmd = expansion;
 		free(expansion);
 #endif
-		(void) cmd;
+		UNUSED(cmd);
 		return false;
 	}
 };

src/scripting/game_lua_kernel.cpp

@@ -1517,7 +1517,7 @@ int game_lua_kernel::impl_end_level_data_set(lua_State* L)
 static int impl_end_level_data_collect(lua_State* L)
 {
 	end_level_data* data = static_cast<end_level_data*>(lua_touserdata(L, 1));
-	(void)data; // Suppress an erroneous MSVC warning (a destructor call doesn't count as a reference)
+	UNUSED(data); // Suppress an erroneous MSVC warning (a destructor call doesn't count as a reference)
 	data->~end_level_data();
 	return 0;
 }

src/wesnoth.cpp

@@ -1025,8 +1025,8 @@ int main(int argc, char** argv)
 #endif
 {
 #ifdef _WIN32
-	(void)argc;
-	(void)argv;
+	UNUSED(argc);
+	UNUSED(argv);
 
 	// windows argv is ansi encoded by default
 	std::vector<std::string> args =