Cleanup: Adding break

Just safer in case we add more cases. Also shuts up code analyser.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6390 dfc29bdd-3216-0410-991c-e03cc46cb475

include/SMaterial.h

@@ -618,6 +618,7 @@ namespace video
 					PolygonOffsetDirection = EPO_BACK;
 					PolygonOffsetSlopeScale = value?1.f:0.f;
 					PolygonOffsetDepthBias = value?1.f:0.f;
+					break;
 				default:
 					break;
 			}