Use LuaErrors in security check macros

Throwing a LuaError calls destructors as it propagates up the stack,
wheres lua_error just executes a longjmp.

src/script/cpp_api/s_security.h

@@ -25,9 +25,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #define CHECK_SECURE_PATH(L, path) \
 	if (!ScriptApiSecurity::checkPath(L, path)) { \
-		lua_pushstring(L, (std::string("Attempt to access external file ") + \
-					path + " with mod security on.").c_str()); \
-		lua_error(L); \
+		throw LuaError(std::string("Attempt to access external file ") + \
+					path + " with mod security on."); \
 	}
 #define CHECK_SECURE_PATH_OPTIONAL(L, path) \
 	if (ScriptApiSecurity::isSecure(L)) { \

src/script/lua_api/l_util.cpp

@@ -77,8 +77,7 @@ int ModApiUtil::l_get_us_time(lua_State *L)
 #define CHECK_SECURE_SETTING(L, name) \
 	if (ScriptApiSecurity::isSecure(L) && \
 			name.compare(0, 7, "secure.") == 0) { \
-		lua_pushliteral(L, "Attempt to set secure setting."); \
-		lua_error(L); \
+		throw LuaError("Attempt to set secure setting."); \
 	}
 
 // setting_set(name, value)