fstests: fix blksize_t printf format warnings across architectures

Fix format string warnings when printing blksize_t values that vary
across architectures. The warning occurs because blksize_t is defined
differently between architectures: aarch64 architectures blksize_t is
int, on x86-64 it's long-int.  Cast the values to long. Fixes warnings
as below.

 seek_sanity_test.c:110:45: warning: format '%ld' expects argument of type
 'long int', but argument 3 has type 'blksize_t' {aka 'int'}

 attr_replace_test.c:70:22: warning: format '%ld' expects argument of type
 'long int', but argument 3 has type '__blksize_t' {aka 'int'}

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>
diff --git a/src/attr_replace_test.c b/src/attr_replace_test.c
index 1218e72..5d560a6 100644
--- a/src/attr_replace_test.c
+++ b/src/attr_replace_test.c
@@ -67,7 +67,7 @@
 	if (ret < 0) die();
 	size = sbuf.st_blksize * 3 / 4;
 	if (!size)
-		fail("Invalid st_blksize(%ld)\n", sbuf.st_blksize);
+		fail("Invalid st_blksize(%ld)\n", (long)sbuf.st_blksize);
 	size = MIN(size, maxsize);
 	value = malloc(size);
 	if (!value)
diff --git a/src/seek_sanity_test.c b/src/seek_sanity_test.c
index a61ed3d..c593035 100644
--- a/src/seek_sanity_test.c
+++ b/src/seek_sanity_test.c
@@ -107,7 +107,7 @@
 		offset += pos ? 0 : 1;
 	alloc_size = offset;
 done:
-	fprintf(stdout, "Allocation size: %ld\n", alloc_size);
+	fprintf(stdout, "Allocation size: %ld\n", (long)alloc_size);
 	return 0;
 
 fail: