Allow alignment padding in handler table DCHECK.

This allows handler tables to be followed by (at maximum) 4 bytes of
alignment padding. Data following the handler table (e.g. the constant
pool) might cause such padding to be added.

R=jgruber@chromium.org

Change-Id: Icb1d3156032b847dc805b8e3e63b02c0b29dbd51
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1605723Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61437}

src/handler-table.cc

@@ -38,7 +38,8 @@ HandlerTable::HandlerTable(Address handler_table, int handler_table_size)
       mode_(kReturnAddressBasedEncoding),
 #endif
       raw_encoded_data_(handler_table) {
-  DCHECK_EQ(0, handler_table_size % (kReturnEntrySize * sizeof(int32_t)));
+  static_assert(4 < kReturnEntrySize * sizeof(int32_t), "allowed padding");
+  DCHECK_GE(4, handler_table_size % (kReturnEntrySize * sizeof(int32_t)));
 }
 
 int HandlerTable::GetRangeStart(int index) const {