[svg] Minor
diff --git a/src/hb-ot-color-svg-table.hh b/src/hb-ot-color-svg-table.hh
index 7c342d0..bb4c4f7 100644
--- a/src/hb-ot-color-svg-table.hh
+++ b/src/hb-ot-color-svg-table.hh
@@ -50,10 +50,11 @@
 				    svgDocLength);
   }
 
-  inline bool sanitize (hb_sanitize_context_t *c) const
+  inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
   {
     TRACE_SANITIZE (this);
-    return_trace (c->check_struct (this));
+    return_trace (c->check_struct (this) &&
+		  svgDoc.sanitize (c, base, svgDocLength));
   }
 
   protected: