tests/memrange-test: Correct final end test in test_memrange_steal()

If an inserted region's base wasn't aligned, the resulting range should
still cover the original end (original region's base + size) and not the
aligned-down base + size.

Change-Id: I8f1c9456d6dbab4fa868de5c93fa3656397e54c1
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66607
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

tests/lib/memrange-test.c

@@ -529,7 +529,7 @@ static void test_memrange_steal(void **state)
 				ALIGN_DOWN(res_mock[READONLY_TAG].base, MEMRANGE_ALIGN));
 			assert_int_equal(
 				range_entry_end(ptr),
-				ALIGN_UP(range_entry_base(ptr) + res_mock[READONLY_TAG].size,
+				ALIGN_UP(res_mock[READONLY_TAG].base + res_mock[READONLY_TAG].size,
 					 MEMRANGE_ALIGN));
 		}
 		count++;