Bless incremental test.

Author: cjgillot

tests/incremental/hashes/match_expressions.rs

@@ -227,7 +227,7 @@ pub fn change_mutability_of_binding_in_pattern(x: u32) -> u32 {
 
 // Ignore optimized_mir in cfail2, the only change to optimized MIR is a span.
 #[cfg(not(any(cfail1,cfail4)))]
-#[rustc_clean(cfg="cfail2", except="hir_owner_nodes,typeck")]
+#[rustc_clean(cfg="cfail2", except="hir_owner_nodes,optimized_mir,typeck")]
 #[rustc_clean(cfg="cfail3")]
 #[rustc_clean(cfg="cfail5", except="hir_owner_nodes,optimized_mir,typeck")]
 #[rustc_clean(cfg="cfail6")]