Apply suggestions from code review

Co-authored-by: Jib <Jibzade@gmail.com>

Author: Jibola

bson/buffer.c

@@ -155,4 +155,3 @@ char* pymongo_buffer_get_buffer(buffer_t buffer) {
 void pymongo_buffer_update_position(buffer_t buffer, buffer_position new_position) {
     buffer->position = new_position;
 }
-

pymongo/_cmessagemodule.c

@@ -333,6 +333,7 @@ static PyObject* _cbson_op_msg(PyObject* self, PyObject* args) {
     return result;
 }
 
+
 static void
 _set_document_too_large(int size, long max) {
     PyObject* DocumentTooLarge = _error("DocumentTooLarge");
@@ -351,6 +352,7 @@ _set_document_too_large(int size, long max) {
 #define _DELETE 2
 
 /* OP_MSG ----------------------------------------------- */
+
 static int
 _batched_op_msg(
         unsigned char op, unsigned char ack,
@@ -656,6 +658,7 @@ _cbson_batched_op_msg(PyObject* self, PyObject* args) {
 }
 
 /* End OP_MSG -------------------------------------------- */
+
 static int
 _batched_write_command(
         char* ns, Py_ssize_t ns_len, unsigned char op,
@@ -859,6 +862,7 @@ _batched_write_command(
     Py_XDECREF(iterator);
     return 0;
 }
+
 static PyObject*
 _cbson_encode_batched_write_command(PyObject* self, PyObject* args) {
     char *ns = NULL;
@@ -1013,6 +1017,7 @@ _cmessage_exec(PyObject *m)
     INITERROR;
 }
 
+
 static PyModuleDef_Slot _cmessage_slots[] = {
     {Py_mod_exec, _cmessage_exec},
 #ifdef Py_MOD_MULTIPLE_INTERPRETERS_SUPPORTED
@@ -1024,6 +1029,7 @@ static PyModuleDef_Slot _cmessage_slots[] = {
     {0, NULL},
 };
 
+
 static struct PyModuleDef moduledef = {
         PyModuleDef_HEAD_INIT,
         "_cmessage",
@@ -1040,3 +1046,4 @@ PyMODINIT_FUNC
 PyInit__cmessage(void)
 {
     return PyModuleDef_Init(&moduledef);
+}