Refs Tokutek/ft-index#159 Calculate klpair size correctly when garbage...

Refs Tokutek/ft-index#159 Calculate klpair size correctly when garbage collection deletes a leafentry

ft/ule.cc

@@ -552,6 +552,7 @@ toku_le_garbage_collect(LEAFENTRY old_leaf_entry,
                         const xid_omt_t &live_root_txns,
                         TXNID oldest_referenced_xid_known,
                         int64_t * numbytes_delta_p) {
+    paranoid_invariant_notnull(new_leaf_entry);
     ULE_S ule;
     int64_t oldnumbytes = 0;
     int64_t newnumbytes = 0;
@@ -588,7 +589,7 @@ toku_le_garbage_collect(LEAFENTRY old_leaf_entry,
         new_leaf_entry
         );
     assert(r == 0);
-    if (new_leaf_entry) {
+    if (*new_leaf_entry) {
         newnumbytes = ule_get_innermost_numbytes(&ule, keylen);
     }
     *numbytes_delta_p = newnumbytes - oldnumbytes;