Bugfixes.

* libmu_sieve/sieve.y (mu_sieve_compile): Initialize rc.
* python/libmu_py/sieve.c (api_sieve_machine_error_text): Fix
type of length.

@@ -606,7 +606,7 @@ mu_sieve_machine_finish (mu_sieve_machine_t mach)
 int
 mu_sieve_compile (mu_sieve_machine_t mach, const char *name)
 {
-  int rc;
+  int rc = 0;
   
   mu_sieve_machine_begin (mach, name);
 

@@ -120,7 +120,7 @@ api_sieve_machine_error_text (PyObject *self, PyObject *args)
   mu_stream_t estr;
   mu_transport_t trans[2];
   PyObject *retval;
-  size_t length = 0;
+  mu_off_t length = 0;
   
   if (!PyArg_ParseTuple (args, "O!", &PySieveMachineType, &py_mach))
     return NULL;