Update error message and un-xfail test

Author: catamorphism

src/test/compile-fail/regions-in-consts.rs

@@ -1,7 +1,5 @@
-// xfail-test
-
-const c_x: &blk/int = 22; //~ ERROR only the static region is allowed here
-const c_y: &static/int = &22; //~ ERROR only the static region is allowed here
+const c_x: &blk/int = &22; //~ ERROR only the static region is allowed here
+const c_y: &static/int = &22;
 
 fn main() {
 }