remove other unwraps

Author: Milo123459

crates/ide-assists/src/handlers/generate_function.rs

@@ -404,7 +404,11 @@ impl FunctionBuilder {
             leading_ws,
             ret_type: fn_def.ret_type(),
             // PANIC: we guarantee we always create a function body with a tail expr
-            tail_expr: fn_def.body().unwrap().tail_expr().unwrap(),
+            tail_expr: fn_def
+                .body()
+                .expect("generated function should have a body")
+                .tail_expr()
+                .expect("function body should have a tail expression"),
             should_focus_return_type: self.should_focus_return_type,
             fn_def,
             trailing_ws,