Fix FP in single_component_path_imports lint

[ThibsG]

Fix FP in single_component_path_imports lint when the import is reused with self, like in use self::module.

Fixes #5210

changelog: none

[rust-highfive]

r? @flip1995

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[flip1995]

r? @giraffate

[giraffate]

@bors r+

It looks good, thanks!

[bors]

📌 Commit 81dfb9e has been approved by giraffate

[bors]

⌛ Testing commit 81dfb9e with merge 067cc44...

[bors]

💥 Test timed out

[giraffate]

@bors retry

[bors]

⌛ Testing commit 81dfb9e with merge 6a92cb7...

[bors]

💔 Test failed - checks-action_test

[giraffate]

@bors retry

[bors]

⌛ Testing commit 81dfb9e with merge 52d21be...

[bors]

💔 Test failed - checks-action_test

[giraffate]

Oh, the test fails because of ICE, I missed it. I will check it later.

[djc]

Did this also the fix the case of use crate::foo? That is, I have the following:

lib.rs:

#[cfg(foo)]
use log;

#[cfg(not(foo))]
#[macro_use]
mod log {
    macro_rules! error    ( ($($tt:tt)*) => {{}} );
};

mod inner {
    use crate::log::error;
}

[ThibsG]

@djc, no I don't think this case is handled, but feel free to provide a playground, and I will take a look at this.

[giraffate]

@bors r+

Thanks!

[bors]

📌 Commit 297e84f has been approved by giraffate

[bors]

⌛ Testing commit 297e84f with merge 67fad01...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: giraffate
Pushing 67fad01 to master...