Previously this test emmited expected '('

gcc/testsuite/ChangeLog:

	* rust/compile/invalid_impl_for.rs: triggers check for identifier

Signed-off-by: Lúcio Boari Fleury <lucboari@gmail.com>

Author: lucbf

gcc/testsuite/rust/compile/invalid_impl_for.rs

@@ -0,0 +1,4 @@
+impl Foo for
+fn main() {// { dg-error "unexpected token .identifier. - expected bare function" }
+// { dg-error "could not parse type in trait impl" "" { target *-*-* } .-1 }
+}