Fix: Engine preview text overly padded.

WIP_EP_QUESTION is already padded at the widget level, so no need to apply
extra padding to left/right.

src/engine_gui.cpp

@@ -109,17 +109,16 @@ struct EnginePreviewWindow : Window {
 
 		EngineID engine = this->window_number;
 		SetDParam(0, GetEngineCategoryName(engine));
-		int y = r.top + GetStringHeight(STR_ENGINE_PREVIEW_MESSAGE, r.Width());
-		y = DrawStringMultiLine(r.left, r.right, r.top, y, STR_ENGINE_PREVIEW_MESSAGE, TC_FROMSTRING, SA_CENTER) + WD_PAR_VSEP_WIDE;
+		int y = DrawStringMultiLine(r, STR_ENGINE_PREVIEW_MESSAGE, TC_FROMSTRING, SA_HOR_CENTER | SA_TOP) + WD_PAR_VSEP_WIDE;
 
 		SetDParam(0, engine);
-		DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, STR_ENGINE_NAME, TC_BLACK, SA_HOR_CENTER);
+		DrawString(r.left, r.right, y, STR_ENGINE_NAME, TC_BLACK, SA_HOR_CENTER);
 		y += FONT_HEIGHT_NORMAL;
 
-		DrawVehicleEngine(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, this->width >> 1, y + this->vehicle_space / 2, engine, GetEnginePalette(engine, _local_company), EIT_PREVIEW);
+		DrawVehicleEngine(r.left, r.right, this->width >> 1, y + this->vehicle_space / 2, engine, GetEnginePalette(engine, _local_company), EIT_PREVIEW);
 
 		y += this->vehicle_space;
-		DrawStringMultiLine(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, r.bottom, GetEngineInfoString(engine), TC_FROMSTRING, SA_CENTER);
+		DrawStringMultiLine(r.left, r.right, y, r.bottom, GetEngineInfoString(engine), TC_FROMSTRING, SA_CENTER);
 	}
 
 	void OnClick(Point pt, int widget, int click_count) override