Update src/tools/miri/tests/pass/const-addrs.rs

Co-authored-by: Ralf Jung <post@ralfj.de>

Author: cjgillot

src/tools/miri/tests/pass/const-addrs.rs

@@ -4,7 +4,7 @@
 // In practice, the interpreter always returns the same address, but we *do not guarantee* that.
 //@compile-flags: -Zinline-mir=no
 
-const EVALS: usize = 256;
+const EVALS: usize = 64;
 
 use std::collections::HashSet;
 fn main() {