Fix not complete after inner-attr in source-file

Example
---
```rust
#![attr] $0
```

**Before this PR**

Empty completion list

**After this PR**

```text
ma makro!(…) macro_rules! makro
md module
kw async
kw const
kw crate::
kw enum
kw extern
kw fn
kw impl
kw impl for
kw mod
kw pub
kw pub(crate)
kw pub(super)
kw self::
kw static
kw struct
kw trait
kw type
kw union
kw unsafe
kw use
sn macro_rules
sn tfn (Test function)
sn tmod (Test module)
```
2 files changed
tree: 0554a416ce10e143a1a35f5a41340c76f8fed9c6
  1. .cargo/
  2. .github/
  3. .vscode/
  4. assets/
  5. bench_data/
  6. crates/
  7. docs/
  8. editors/
  9. lib/
  10. xtask/
  11. .editorconfig
  12. .git-blame-ignore-revs
  13. .gitattributes
  14. .gitignore
  15. .typos.toml
  16. Cargo.lock
  17. Cargo.toml
  18. clippy.toml
  19. CONTRIBUTING.md
  20. josh-sync.toml
  21. LICENSE-APACHE
  22. LICENSE-MIT
  23. PRIVACY.md
  24. README.md
  25. rust-version
  26. rustfmt.toml
  27. triagebot.toml
README.md

rust-analyzer is a language server that provides IDE functionality for writing Rust programs. You can use it with any editor that supports the Language Server Protocol (VS Code, Vim, Emacs, Zed, etc).

rust-analyzer features include go-to-definition, find-all-references, refactorings and code completion. rust-analyzer also supports integrated formatting (with rustfmt) and integrated diagnostics (with rustc and clippy).

Internally, rust-analyzer is structured as a set of libraries for analyzing Rust code. See Architecture in the manual.

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https://rust-analyzer.github.io/book/installation.html

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If you want to contribute to rust-analyzer check out the CONTRIBUTING.md or if you are just curious about how things work under the hood, see the Contributing section of the manual.

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https://users.rust-lang.org/c/ide/14

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Quick Links

License

rust-analyzer is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.