fix test

Author: nebulark

tests/codegen/patchable-function-entry.rs

@@ -1,6 +1,6 @@
-#![feature(patchable_function_entry)]
 //@ compile-flags: -Z patchable-function-entry=15,10
 
+#![feature(patchable_function_entry)]
 #![crate_type = "lib"]
 
 // This should have the default, as set by the compile flags