test: skip test that is flaky on i386

Author: mhx

test/tool_main_test.cpp

@@ -3125,6 +3125,10 @@ TEST(mkdwarfs_test, map_file_error) {
 class map_file_error_test : public testing::TestWithParam<char const*> {};
 
 TEST_P(map_file_error_test, delayed) {
+#if defined(__linux__) && defined(__i386__)
+  GTEST_SKIP() << "this test is flaky on i386 Linux (SIGPIPE)";
+#endif
+
   std::string extra_args{GetParam()};
 
   auto t = mkdwarfs_tester::create_empty();