Fix build error in freestyle when not using precompiled headers

source/blender/python/intern/bpy_capi_utils.h

@@ -8,6 +8,8 @@
 
 #pragma once
 
+#include <Python.h>
+
 #if PY_VERSION_HEX < 0x030a0000
 #  error "Python 3.10 or greater is required, you'll need to update your Python."
 #endif
@@ -16,6 +18,7 @@
 extern "C" {
 #endif
 
+struct bContext;
 struct ReportList;
 
 /**