Fix comment for ptr alignment checks in codegen

compiler/rustc_codegen_ssa/src/mir/block.rs

@@ -616,7 +616,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
             AssertKind::MisalignedPointerDereference { ref required, ref found } => {
                 let required = self.codegen_operand(bx, required).immediate();
                 let found = self.codegen_operand(bx, found).immediate();
-                // It's `fn panic_bounds_check(index: usize, len: usize)`,
+                // It's `fn panic_misaligned_pointer_dereference(required: usize, found: usize)`,
                 // and `#[track_caller]` adds an implicit third argument.
                 (LangItem::PanicMisalignedPointerDereference, vec![required, found, location])
             }