Rollup merge of rust-lang#87385 - Aaron1011:final-enable-semi, r=petrochenkov

Make `SEMICOLON_IN_EXPRESSIONS_FROM_MACROS` warn by default

This PR makes the `SEMICOLON_IN_EXPRESSIONS_FROM_MACROS` lint warn by default.

To avoid showing a large number of un-actionable warnings to users, we only enable the lint for macros defined in the same crate. This ensures that users will be able to fix the warning by simply removing a semicolon.

In the future, I'd like to enable this lint unconditionally, and eventually make it into a hard error in a future edition. This PR is a step towards that goal.

Author: JohnTitor

std/src/macros.rs

@@ -290,7 +290,7 @@ macro_rules! dbg {
     // `$val` expression could be a block (`{ .. }`), in which case the `eprintln!`
     // will be malformed.
     () => {
-        $crate::eprintln!("[{}:{}]", $crate::file!(), $crate::line!());
+        $crate::eprintln!("[{}:{}]", $crate::file!(), $crate::line!())
     };
     ($val:expr $(,)?) => {
         // Use of `match` here is intentional because it affects the lifetimes