Revert "Cleanup: add semicolon after PyObject_VAR_HEAD"

This reverts commit a01bcfa636.

This causes MSVC2019 build to fail with error C2059

Unfortunately this means we have to put up with bad formatting
in Python structs.

source/blender/python/generic/bgl.h

@@ -33,8 +33,7 @@ int BGL_typeSize(int type);
  * For Python access to OpenGL functions requiring a pointer.
  */
 typedef struct _Buffer {
-  PyObject_VAR_HEAD;
-  PyObject *parent;
+  PyObject_VAR_HEAD PyObject *parent;
 
   int type; /* GL_BYTE, GL_SHORT, GL_INT, GL_FLOAT */
   int ndimensions;

source/blender/python/generic/idprop_py_api.h

@@ -37,22 +37,19 @@ extern PyTypeObject BPy_IDGroup_Type;
 #define BPy_IDGroup_CheckExact(v) (Py_TYPE(v) == &BPy_IDGroup_Type)
 
 typedef struct BPy_IDProperty {
-  PyObject_VAR_HEAD;
-  struct ID *id;           /* can be NULL */
-  struct IDProperty *prop; /* must be second member */
+  PyObject_VAR_HEAD struct ID *id; /* can be NULL */
+  struct IDProperty *prop;         /* must be second member */
   struct IDProperty *parent;
   PyObject *data_wrap;
 } BPy_IDProperty;
 
 typedef struct BPy_IDArray {
-  PyObject_VAR_HEAD;
-  struct ID *id;           /* can be NULL */
-  struct IDProperty *prop; /* must be second member */
+  PyObject_VAR_HEAD struct ID *id; /* can be NULL */
+  struct IDProperty *prop;         /* must be second member */
 } BPy_IDArray;
 
 typedef struct BPy_IDGroup_Iter {
-  PyObject_VAR_HEAD;
-  BPy_IDProperty *group;
+  PyObject_VAR_HEAD BPy_IDProperty *group;
   struct IDProperty *cur;
   int mode;
 } BPy_IDGroup_Iter;

source/blender/python/generic/imbuf_py_api.c

@@ -46,9 +46,9 @@ static PyObject *Py_ImBuf_CreatePyObject(ImBuf *ibuf);
  * \{ */
 
 typedef struct Py_ImBuf {
-  PyObject_VAR_HEAD;
-  /* can be NULL */
-  ImBuf *ibuf;
+  PyObject_VAR_HEAD
+      /* can be NULL */
+      ImBuf *ibuf;
 } Py_ImBuf;
 
 static int py_imbuf_valid_check(Py_ImBuf *self)