style cleanup: comments

source/blender/python/mathutils/mathutils_Quaternion.h

@@ -44,7 +44,7 @@ typedef struct {
  * be stored in py_data) or be a wrapper for data allocated through
  * blender (stored in blend_data). This is an either/or struct not both */
 
-//prototypes
+/* prototypes */
 PyObject *Quaternion_CreatePyObject(float *quat, int type, PyTypeObject *base_type);
 PyObject *Quaternion_CreatePyObject_cb(PyObject *cb_user,
                                        unsigned char cb_type, unsigned char cb_subtype);