Avoid dropping const qualifier needlessly
diff --git a/common/rdr/MemInStream.h b/common/rdr/MemInStream.h
index 77ca3f3..1a6a798 100644
--- a/common/rdr/MemInStream.h
+++ b/common/rdr/MemInStream.h
@@ -45,7 +45,7 @@
 
     virtual ~MemInStream() {
       if (deleteWhenDone)
-        delete [] (U8*)start;
+        delete [] start;
     }
 
     int pos() { return ptr - start; }