declare_lint_pass!(TransmutingNull => [TRANSMUTING_NULL]);
-const LINT_MSG: &str = "transmuting a known null pointer into a reference.";
+const LINT_MSG: &str = "transmuting a known null pointer into a reference";
impl<'tcx> LateLintPass<'tcx> for TransmutingNull {
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {