simplify width calculation

lazysizes.js

@@ -219,7 +219,7 @@
 						(eLleft = rect.left) <= eLvW &&
 						(eLbottom || eLright || eLleft || eLtop) &&
 						((isCompleted && isLoading < 3 && !elemExpandVal && (loadMode < 3 || lowRuns < 4)) || isNestedVisible(lazyloadElems[i], elemExpand))){
-						unveilElement(lazyloadElems[i], rect.width);
+						unveilElement(lazyloadElems[i]);
 						loadedSomething = true;
 						if(isLoading > 6){currentExpand = shrinkExpand;}
 					} else if(!loadedSomething && isCompleted && !autoLoadElem &&
@@ -270,8 +270,8 @@
 			};
 		})();
 
-		var unveilElement = function (elem, width){
-			var sources, i, len, sourceSrcset, src, srcset, parent, isPicture, event, firesLoad, customMedia;
+		var unveilElement = function (elem){
+			var sources, i, len, sourceSrcset, src, srcset, parent, isPicture, event, firesLoad, customMedia, width;
 
 			var isImg = regImg.test(elem.nodeName);
 
@@ -282,7 +282,7 @@
 			if( (isAuto || !isCompleted) && isImg && (elem.src || elem.srcset) && !elem.complete && !hasClass(elem, lazySizesConfig.errorClass)){return;}
 
 			if(isAuto){
-				width = Math.max(width || 0, elem.offsetWidth);
+				width = elem.offsetWidth;
 			}
 
 			elem._lazyRace = true;