Fix header dependency issues

sdk/xtdk/xtstruct.h

@@ -331,6 +331,7 @@ typedef struct _POOL_TRACKING_BIG_ALLOCATIONS POOL_TRACKING_BIG_ALLOCATIONS, *PP
 typedef struct _POOL_TRACKING_TABLE POOL_TRACKING_TABLE, *PPOOL_TRACKING_TABLE;
 typedef struct _PROCESSOR_IDENTITY PROCESSOR_IDENTITY, *PPROCESSOR_IDENTITY;
 typedef struct _PROCESSOR_POWER_STATE PROCESSOR_POWER_STATE, *PPROCESSOR_POWER_STATE;
+typedef struct _QUAD QUAD, *PQUAD;
 typedef struct _RTL_BALANCED_NODE RTL_BALANCED_NODE, *PRTL_BALANCED_NODE;
 typedef struct _RTL_BITMAP RTL_BITMAP, *PRTL_BITMAP;
 typedef struct _RTL_PRINT_CONTEXT RTL_PRINT_CONTEXT, *PRTL_PRINT_CONTEXT;