core: what rustfmt actually wanted

Three from the checker's own diff. Two are the rule I had guessed at: when a
call overflows and its last argument is a closure, rustfmt keeps the earlier
arguments on the line and expands the closure into a block, rather than putting
every argument on its own line.

The third is a stray double blank line before the test module.

core/src/local/schema.rs

@@ -222,11 +222,9 @@ fn migrate_v8(conn: &Connection) -> rusqlite::Result<()> {
 
     for (note_id, items) in grouped {
         let existing: Option<String> = conn
-            .query_row(
-                "SELECT body FROM notes WHERE id = ?1",
-                [&note_id],
-                |r| r.get(0),
-            )
+            .query_row("SELECT body FROM notes WHERE id = ?1", [&note_id], |r| {
+                r.get(0)
+            })
             .optional()?;
         // An item whose note is already gone has nothing to fold into. The foreign key
         // should make this impossible; skipping costs nothing, and failing here would
@@ -290,7 +288,6 @@ pub fn migrate(conn: &Connection) -> rusqlite::Result<()> {
     Ok(())
 }
 
-
 #[cfg(test)]
 mod tests {
     use super::*;