When converting a tuple to a list, the count needs to be incremented on the borrowed reference

http://github.com/rtyler/py-yajl/issues#issue/11

Change-Id: I54adeaf992d041f43b8d1c9c8eb3fbe957b85826

encoder.c

@@ -181,10 +181,13 @@ static yajl_gen_status ProcessObject(_YajlEncoder *self, PyObject *object)
          */
         Py_ssize_t size = PyTuple_Size(object);
         PyObject *converted = PyList_New(size);
+        PyObject *item = NULL;
         unsigned int i = 0;
 
         for (; i < size; ++i) {
-            PyList_SET_ITEM(converted, (Py_ssize_t)(i), PyTuple_GetItem(object, i));
+            item = PyTuple_GetItem(object, i);
+            Py_INCREF(item);
+            PyList_SET_ITEM(converted, (Py_ssize_t)(i), item);
         }
         return ProcessObject(self, converted);
     }

tests/issue_11.py

@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+import yajl
+import sys
+
+for i, l in enumerate(sys.stdin):
+    l = l.rstrip('\n').split('\t')
+    d = yajl.dumps(tuple(l))
+    print i,