test: disable coredumps for the selftest

Because on my XPS coredumps take away all the CPU, leading to a test timeout.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

test/litest-selftest.c

 #include <config.h>
 
+#include <sys/resource.h>
+#include <sys/time.h>
 #include <check.h>
 #include <signal.h>
 
@@ -441,6 +443,7 @@ litest_assert_macros_suite(void)
 int
 main (int argc, char **argv)
 {
+	const struct rlimit corelimit = { 0, 0 };
 	int nfailed;
 	Suite *s;
 	SRunner *sr;
@@ -451,6 +454,9 @@ main (int argc, char **argv)
         if (RUNNING_ON_VALGRIND)
             return 77;
 
+	if (setrlimit(RLIMIT_CORE, &corelimit) != 0)
+		perror("WARNING: Core dumps not disabled");
+
 	s = litest_assert_macros_suite();
         sr = srunner_create(s);