Add Help and Suggestion to issue-29124 tests

src/test/compile-fail/issue-29124.rs

@@ -25,7 +25,11 @@ fn main() {
     obj::func.x();
     //~^ ERROR no method named `x` found for type `fn() -> ret {obj::func}` in the current scope
     //~^^ NOTE obj::func is a function, perhaps you wish to call it
+    //~^^^ HELP try calling the base function:
+    //~| SUGGESTION obj::func().x();
     func.x();
     //~^ ERROR no method named `x` found for type `fn() -> ret {func}` in the current scope
     //~^^ NOTE func is a function, perhaps you wish to call it
+    //~^^^ HELP try calling the base function:
+    //~| SUGGESTION func().x();
 }