Tweak various coverage test files for slightly nicer formatting

For coverage tests, splitting code across multiple lines often makes the
resulting coverage report easier to interpret, so we force rustfmt to retain
line breaks by adding dummy line comments with `//`.

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/coverage/coroutine.rs b/tests/coverage/coroutine.rs
index 7f72e0d8bd4..84d1b3304c5 100644
--- a/tests/coverage/coroutine.rs
+++ b/tests/coverage/coroutine.rs
@@ -10,9 +10,9 @@ use std::pin::Pin;
 // to handle this condition, and still report dead block coverage.
 fn get_u32(val: bool) -> Result<u32, String> {
     if val {
-        Ok(1)
+        Ok(1) //
     } else {
-        Err(String::from("some error"))
+        Err(String::from("some error")) //
     }
 }