Merge branch 'master' into jgrpp

# Conflicts:
#	regression/regression/result.txt
#	src/aircraft_cmd.cpp
#	src/airport_gui.cpp
#	src/articulated_vehicles.cpp
#	src/console_cmds.cpp
#	src/date_gui.cpp
#	src/engine.cpp
#	src/genworld_gui.cpp
#	src/gfx_layout_fallback.cpp
#	src/group_gui.cpp
#	src/hotkeys.cpp
#	src/network/core/tcp_connect.cpp
#	src/network/core/tcp_listen.h
#	src/newgrf.cpp
#	src/newgrf.h
#	src/newgrf_engine.cpp
#	src/newgrf_gui.cpp
#	src/newgrf_station.cpp
#	src/openttd.cpp
#	src/order_gui.cpp
#	src/os/macosx/osx_main.cpp
#	src/pathfinder/yapf/yapf_node_rail.hpp
#	src/rail_gui.cpp
#	src/saveload/afterload.cpp
#	src/saveload/cargopacket_sl.cpp
#	src/saveload/linkgraph_sl.cpp
#	src/saveload/station_sl.cpp
#	src/script/api/script_industrytype.cpp
#	src/settings.cpp
#	src/settings_gui.cpp
#	src/settings_table.cpp
#	src/settingsgen/settingsgen.cpp
#	src/station.cpp
#	src/station_cmd.cpp
#	src/strings.cpp
#	src/timer/timer_game_calendar.cpp
#	src/timer/timer_game_calendar.h
#	src/timer/timer_manager.h
#	src/timer/timer_window.cpp
#	src/timetable_cmd.cpp
#	src/toolbar_gui.cpp
#	src/town_cmd.cpp
#	src/town_gui.cpp
#	src/train_gui.cpp
#	src/vehicle_cmd.h
#	src/vehicle_gui.cpp
#	src/viewport.cpp
#	src/widgets/dropdown.cpp
#	src/window_func.h
#	src/window_gui.h

src/os/windows/string_uniscribe.cpp

@@ -292,7 +292,7 @@ static std::vector<SCRIPT_ITEM> UniscribeItemizeString(UniscribeParagraphLayoutF
 
 	/* Itemize text. */
 	std::vector<SCRIPT_ITEM> items = UniscribeItemizeString(buff, length);
-	if (items.size() == 0) return nullptr;
+	if (items.empty()) return nullptr;
 
 	/* Build ranges from the items and the font map. A range is a run of text
 	 * that is part of a single item and formatted using a single font style. */
@@ -551,11 +551,11 @@ const int *UniscribeParagraphLayout::UniscribeVisualRun::GetGlyphToCharMap() con
 	/* Query Uniscribe for word and cluster break information. */
 	this->str_info.resize(utf16_to_utf8.size());
 
-	if (utf16_str.size() > 0) {
+	if (!utf16_str.empty()) {
 		/* Itemize string into language runs. */
 		std::vector<SCRIPT_ITEM> runs = UniscribeItemizeString(&utf16_str[0], (int32)utf16_str.size());
 
-		for (std::vector<SCRIPT_ITEM>::const_iterator run = runs.begin(); runs.size() > 0 && run != runs.end() - 1; run++) {
+		for (std::vector<SCRIPT_ITEM>::const_iterator run = runs.begin(); !runs.empty() && run != runs.end() - 1; run++) {
 			/* Get information on valid word and character break.s */
 			int len = (run + 1)->iCharPos - run->iCharPos;
 			std::vector<SCRIPT_LOGATTR> attr(len);