MS VC++ compatibility PYTHON-387

Author: behackett

bson/_cbsonmodule.c

@@ -476,6 +476,8 @@ static int _write_element_to_buffer(PyObject* self, buffer_t buffer, int type_by
  } else if (state->UUID && PyObject_IsInstance(value, state->UUID)) {
  // Just a special case of Binary above, but simpler to do as a separate case
 
+ PyObject* bytes;
+
  // Could be bytes, bytearray, str...
  const char* binarr;
  // UUID is always 16 bytes
@@ -488,8 +490,6 @@ static int _write_element_to_buffer(PyObject* self, buffer_t buffer, int type_by
  subtype = (char)uuid_subtype;
  }
 
- PyObject* bytes;
-
  *(buffer_get_buffer(buffer) + type_byte) = 0x05;
  if (!buffer_write_bytes(buffer, (const char*)&length, 4)) {
  return 0;