Cleanup: move comments wrapped with MultiLine control statements

In some cases comments at the end of control statements were wrapped
onto new lines which made it read as if they applied to the next line
instead of the (now) previous line.

Relocate comments to the previous line or in some cases the end of the
line (before the brace) to avoid confusion.

Note that in quite a few cases these blocks didn't read well
even before MultiLine was used as comments after the brace caused
wrapping across multiple lines in a way that didn't follow
formatting used everywhere else.

source/blender/python/intern/bpy_props.c

@@ -4134,9 +4134,9 @@ static PyObject *BPy_EnumProperty(PyObject *self, PyObject *args, PyObject *kw)
     default_py = NULL;
   }
 
-  /* items can be a list or a callable */
-  if (PyFunction_Check(items))
-  { /* don't use PyCallable_Check because we need the function code for errors */
+  /* Items can be a list or a callable.
+   * NOTE: Don't use #PyCallable_Check because we need the function code for errors. */
+  if (PyFunction_Check(items)) {
     PyCodeObject *f_code = (PyCodeObject *)PyFunction_GET_CODE(items);
     if (f_code->co_argcount != 2) {
       PyErr_Format(PyExc_ValueError,

source/blender/python/mathutils/mathutils_Vector.c

@@ -2203,8 +2203,8 @@ static PyObject *Vector_imul(PyObject *v1, PyObject *v2)
     /* Element-wise product in-place. */
     mul_vn_vn(vec1->vec, vec2->vec, vec1->vec_num);
   }
-  else if (vec1 && (((scalar = PyFloat_AsDouble(v2)) == -1.0f && PyErr_Occurred()) == 0))
-  { /* VEC *= FLOAT */
+  else if (vec1 && (((scalar = PyFloat_AsDouble(v2)) == -1.0f && PyErr_Occurred()) == 0)) {
+    /* VEC *= FLOAT */
     mul_vn_fl(vec1->vec, vec1->vec_num, scalar);
   }
   else {