c91e8f4cfa9a1551c4eb5dd6b5325e60a6203e32 Fix: Correctly handle a colu…

…mn type of `null`, which is the case for server-side processing columns in DataTables 2.1, unless explicity given

DD-2991

Sync to source repo @c91e8f4cfa9a1551c4eb5dd6b5325e60a6203e32

datatables.json

@@ -14,5 +14,5 @@
     ],
     "src-repo": "http://github.com/DataTables/SearchBuilder",
     "last-tag": "1.7.1",
-    "last-sync": "2e9f351b571cd8c197ebe27d943949c33780d20b"
+    "last-sync": "c91e8f4cfa9a1551c4eb5dd6b5325e60a6203e32"
 }