Fix minidump_module_writer_test 32-bit x86 build

minidump/minidump_module_writer_test.cc

Index: minidump/minidump_module_writer_test.cc
diff --git a/minidump/minidump_module_writer_test.cc b/minidump/minidump_module_writer_test.cc
index 5b47e017abff54031fab8eea74b3c74133566060..296de79369a721ac01875256b62a5a936087ff30 100644
--- a/minidump/minidump_module_writer_test.cc
+++ b/minidump/minidump_module_writer_test.cc
@@ -132,7 +132,8 @@ void ExpectCodeViewRecord(const MINIDUMP_LOCATION_DESCRIPTOR* codeview_record,
               &file_contents[codeview_record->Rva]);
       EXPECT_EQ(MinidumpModuleCodeViewRecordPDB20::kSignature,
                 codeview_pdb20_record->signature);
-      EXPECT_EQ(expected_pdb_timestamp, codeview_pdb20_record->timestamp);
+      EXPECT_EQ(static_cast<uint32_t>(expected_pdb_timestamp),
+                codeview_pdb20_record->timestamp);
       EXPECT_EQ(expected_pdb_age, codeview_pdb20_record->age);
 
       observed_pdb_name.assign(