Cleanup: add semicolon after PyObject_VAR_HEAD

clang-format doesn't expand macros,
add semicolon to prevent misleading formatting.

source/blender/python/gpu/gpu_py_shader.h

@@ -26,7 +26,8 @@ extern PyTypeObject BPyGPUShader_Type;
 #define BPyGPUShader_Check(v) (Py_TYPE(v) == &BPyGPUShader_Type)
 
 typedef struct BPyGPUShader {
-  PyObject_VAR_HEAD struct GPUShader *shader;
+  PyObject_VAR_HEAD;
+  struct GPUShader *shader;
   bool is_builtin;
 } BPyGPUShader;