Merge branch 'master' into jgrpp

# Conflicts:
#	src/core/geometry_type.hpp
#	src/error_gui.cpp
#	src/rail_gui.cpp
#	src/tree_gui.cpp
#	src/vehicle_gui.cpp
#	src/widgets/dropdown.cpp

src/graph_gui.cpp

@@ -1263,7 +1263,7 @@ struct PerformanceRatingDetailWindow : Window {
 			CompanyID cid = (CompanyID)(widget - WID_PRD_COMPANY_FIRST);
 			int offset = (cid == this->company) ? 1 : 0;
 			Dimension sprite_size = GetSpriteSize(SPR_COMPANY_ICON);
-			DrawCompanyIcon(cid, (r.left + r.right - sprite_size.width) / 2 + offset, (r.top + r.bottom - sprite_size.height) / 2 + offset);
+			DrawCompanyIcon(cid, CenterBounds(r.left, r.right, sprite_size.width) + offset, CenterBounds(r.top, r.bottom, sprite_size.height) + offset);
 			return;
 		}