discard last margin adjustment when there are too many redraws

Author: archmoj

src/plots/plots.js

@@ -2032,6 +2032,7 @@ plots.doAutoMargin = function(gd) {
         if(fullLayout._redrawFromAutoMarginCount < maxNumberOfRedraws) {
             return Registry.call('plot', gd);
         } else {
+            fullLayout._size = oldMargins;
             Lib.warn('Too many auto-margin redraws.');
         }
     }