Replace some error and quit with cr_fatal

rewriter/tests/heap_two_keys/main.c

@@ -25,8 +25,7 @@ Test(heap_two_keys, 0, .init = trigger_compartment_init) {
 Test(heap_two_keys, 1, .init = trigger_compartment_init) {
     uint32_t *x = (uint32_t *)malloc(sizeof(uint32_t));
     if (!x) {
-        cr_log_error("Failed to allocate memory on the heap");
-        exit(EXIT_FAILURE);
+        cr_fatal("Failed to allocate memory on the heap");
     }
     *x = 0x09431233;
     read_from_plugin_expect_fault((uint8_t*)x);
@@ -40,8 +39,7 @@ Test(heap_two_keys, 2, .init = trigger_compartment_init) {
     // This zeroes out the allocated memory
     uint8_t *x = (uint8_t *)calloc(sizeof(uint8_t), 12);
     if (!x) {
-        cr_log_error("Failed to allocate memory on the heap");
-        exit(EXIT_FAILURE);
+        cr_fatal("Failed to allocate memory on the heap");
     }
     write_from_plugin_expect_fault(x, 12);
     free(x);
@@ -53,8 +51,7 @@ Test(heap_two_keys, 2, .init = trigger_compartment_init) {
 Test(heap_two_keys, 3, .init = trigger_compartment_init) {
     uint16_t *x = (uint16_t *)shared_malloc(sizeof(uint16_t));
     if (!x) {
-        cr_log_error("Failed to allocate memory on the heap");
-        exit(EXIT_FAILURE);
+        cr_fatal("Failed to allocate memory on the heap");
     }
     *x = 0xffed;
     assert(read_from_plugin((uint8_t*)x) == 0xed);