51b21a668a10330a7edcc3aad9324fbad095bb14 Fix: If ajax.url === '' th…

…e `ajax.data` parameter would only correctly trigger once.

https://datatables.net/forums/discussion/79194

Sync to source repo @51b21a668a10330a7edcc3aad9324fbad095bb14

datatables.json

@@ -14,5 +14,5 @@
     ],
     "src-repo": "http://github.com/DataTables/DataTablesSrc",
     "last-tag": "2.0.8",
-    "last-sync": "f192d97f6d4d33df193ec49860b9f050e15df374"
+    "last-sync": "51b21a668a10330a7edcc3aad9324fbad095bb14"
 }