erts: Strengthen literal tag assert

We assert that if we are in a literal range, the literal tag
should also be set. This will only be true in the debug build,
but as asserts are only active in debug builds that is fine.

erts/emulator/beam/global.h

@@ -1564,6 +1564,9 @@ ERTS_GLB_FORCE_INLINE int erts_is_literal(Eterm tptr, Eterm *ptr)
     ASSERT(ptr == ptr_val(tptr));
 
 #if defined(ERTS_HAVE_IS_IN_LITERAL_RANGE)
+#ifdef TAG_LITERAL_PTR
+    ASSERT(!erts_is_in_literal_range(ptr) || is_literal_ptr(tptr));
+#endif
     return erts_is_in_literal_range(ptr);
 #elif defined(TAG_LITERAL_PTR)
     return is_literal_ptr(tptr);