Fix warnings

Author: jdavid

src/blob.c

@@ -286,7 +286,6 @@ Blob__write_to_queue(Blob *self, PyObject *args, PyObject *kwds)
     git_blob *blob = NULL;
     const git_oid *blob_oid;
     struct blob_filter_stream writer;
-    PyObject *result = NULL;
 
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "OOO|nzIO", keywords,
                                      &py_queue, &py_ready, &py_closed,

src/filter.c

@@ -200,7 +200,7 @@ filter__write_next(PyObject *self, PyObject *args, PyObject *kwds)
 
 static PyMethodDef filter__write_next_method = {
     "_write_next",
-    filter__write_next,
+    (PyCFunction)filter__write_next,
     METH_VARARGS | METH_KEYWORDS,
     filter__write_next__doc__
 };
@@ -209,7 +209,7 @@ struct pygit2_filter_stream {
     git_writestream stream;
     git_writestream *next;
     PyObject *py_filter;
-    PyObject *py_src;
+    FilterSource *py_src;
     PyObject *py_write_next;
 };
 
@@ -313,10 +313,11 @@ static int pygit2_filter_stream_close(git_writestream *s)
     if (stream->py_write_next != NULL)
         Py_DECREF(stream->py_write_next);
     PyGILState_Release(gil);
-    if (stream->next != NULL)
+    if (stream->next != NULL) {
         nexterr = stream->next->close(stream->next);
         if (err == 0)
             err = nexterr;
+    }
     return err;
 }
 
@@ -325,7 +326,7 @@ static void pygit2_filter_stream_free(git_writestream *s)
 }
 
 static int pygit2_filter_stream_init(
-    struct pygit2_filter_stream *stream, git_writestream *next, PyObject *py_filter, PyObject *py_src)
+    struct pygit2_filter_stream *stream, git_writestream *next, PyObject *py_filter, FilterSource *py_src)
 {
     int err = 0;
     PyObject *py_next = NULL;
@@ -539,7 +540,6 @@ int pygit2_filter_stream(
 
 void pygit2_filter_cleanup(git_filter *self, void *payload)
 {
-    pygit2_filter *filter = (pygit2_filter *)self;
     struct pygit2_filter_payload *pl = (struct pygit2_filter_payload *)payload;
 
     pygit2_filter_payload_free(pl);

src/pygit2.c

@@ -369,7 +369,7 @@ PyMethodDef module_methods[] = {
     {"option", option, METH_VARARGS, option__doc__},
     {"reference_is_valid_name", reference_is_valid_name, METH_O, reference_is_valid_name__doc__},
     {"tree_entry_cmp", tree_entry_cmp, METH_VARARGS, tree_entry_cmp__doc__},
-    {"filter_register", filter_register, METH_VARARGS | METH_KEYWORDS, filter_register__doc__},
+    {"filter_register", (PyCFunction)filter_register, METH_VARARGS | METH_KEYWORDS, filter_register__doc__},
     {"filter_unregister", filter_unregister, METH_VARARGS, filter_unregister__doc__},
     {NULL}
 };

src/utils.h

@@ -97,7 +97,7 @@ char* pgit_encode_fsdefault(PyObject *value);
 //PyObject * get_pylist_from_git_strarray(git_strarray *strarray);
 //int get_strarraygit_from_pylist(git_strarray *array, PyObject *pylist);
 
-int py_object_to_otype(PyObject *py_type);
+git_otype py_object_to_otype(PyObject *py_type);
 
 /* Helpers to make shorter PyMethodDef and PyGetSetDef blocks */
 #define METHOD(type, name, args)\