[PATCH v2 RFC liburing 1/5] test/{iopoll,read-write}: Use `io_uring_free_probe()` instead of `free()`

[Ammar Faizi <ammar.faizi@students.amikom.ac.id>]

`io_uring_free_probe()` should really be used to free the return value
of `io_uring_get_probe_ring()`. As we may not always allocate it with
`malloc()`. For example, to support no libc build [1].

Link: https://github.com/axboe/liburing/issues/443 [1]
Signed-off-by: Ammar Faizi <ammar.faizi@students.amikom.ac.id>
---
 test/iopoll.c     | 2 +-
 test/read-write.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/iopoll.c b/test/iopoll.c
index de36473..4bfc26a 100644
--- a/test/iopoll.c
+++ b/test/iopoll.c
@@ -306,7 +306,7 @@ static int probe_buf_select(void)
 		fprintf(stdout, "Buffer select not supported, skipping\n");
 		return 0;
 	}
-	free(p);
+	io_uring_free_probe(p);
 	return 0;
 }
 
diff --git a/test/read-write.c b/test/read-write.c
index 885905b..d54ad0e 100644
--- a/test/read-write.c
+++ b/test/read-write.c
@@ -480,7 +480,7 @@ static int test_buf_select(const char *filename, int nonvec)
 		fprintf(stdout, "Buffer select not supported, skipping\n");
 		return 0;
 	}
-	free(p);
+	io_uring_free_probe(p);
 
 	/*
 	 * Write out data with known pattern
-- 
2.30.2