Fix remaining wsl_v5 whitespace findings (refs #61)

Insert the blank line wsl_v5 requires above `defer` and `go`
statements that share no variables with the statement above them.
Applied mechanically via `make lint-fix`; the diff is 60 added blank
lines and nothing else.

internal/database/repository_debug_test.go

@@ -17,6 +17,7 @@ func logSnapshotFileIDs(t *testing.T, db *DB) {
 	if err != nil {
 		t.Fatal(err)
 	}
+
 	defer func() {
 		err := rows.Close()
 		if err != nil {