Optimize lazy slice for start of 0 and an end value.

lodash.src.js

@@ -12342,8 +12342,13 @@
 
     LazyWrapper.prototype.slice = function(start, end) {
       start = start == null ? 0 : (+start || 0);
-      var result = start < 0 ? this.takeRight(-start) : this.drop(start);
 
+      var result = this;
+      if (start < 0) {
+        result = this.takeRight(-start);
+      } else if (start) {
+        result = this.drop(start);
+      }
       if (end !== undefined) {
         end = (+end || 0);
         result = end < 0 ? result.dropRight(-end) : result.take(end - start);