ie fix

Author: Calvin Metcalf

src/leaflet.css.bundle.js

@@ -8354,9 +8354,13 @@ L.Map.include({
 
     LCCS.prototype.addStyle = function(styles) {
       var head, styleElt, styleSheet;
-      if (!document.createElement) {
+      if (document.createStyleSheet) {
         styleSheet = document.createStyleSheet();
-        styleSheet.cssText = styles.join("\n");
+        if (L.Browser.vml) {
+          styleSheet.cssText = styles.join("\n");
+        } else {
+          styleSheet.cssText = styles[0];
+        }
       } else {
         head = document.getElementsByTagName("head")[0];
         styleElt = document.createElement("style");