Allow a dirty MirBuilt for make_extern and make_method_extern

Author: Zoxc

src/test/incremental/hashes/function_interfaces.rs

@@ -94,7 +94,7 @@ pub unsafe fn make_unsafe() {}
 pub fn make_extern() {}
 
 #[cfg(not(cfail1))]
-#[rustc_clean(cfg = "cfail2", except = "Hir, HirBody, TypeckTables, FnSignature")]
+#[rustc_clean(cfg = "cfail2", except = "Hir, HirBody, MirBuilt, TypeckTables, FnSignature")]
 #[rustc_clean(cfg = "cfail3")]
 pub extern "C" fn make_extern() {}
 

src/test/incremental/hashes/inherent_impls.rs

@@ -263,7 +263,7 @@ impl Foo {
 #[rustc_clean(cfg="cfail2")]
 #[rustc_clean(cfg="cfail3")]
 impl Foo {
-    #[rustc_clean(cfg="cfail2", except="Hir,HirBody,FnSignature,TypeckTables")]
+    #[rustc_clean(cfg="cfail2", except="Hir,HirBody,MirBuilt,FnSignature,TypeckTables")]
     #[rustc_clean(cfg="cfail3")]
     pub extern fn make_method_extern(&self) { }
 }