block: fix type for printf argument

When making the block-%d id, the type should be %u. Fixes:

block/bio.c:92:62: warning: incorrect type in argument 4 (different types)
block/bio.c:92:62:    expected int
block/bio.c:92:62:    got unsigned int size

Signed-off-by: Ben Dooks <[email protected]>

Author: bjdooks-ct

block/bio.c

@@ -89,7 +89,7 @@ static struct bio_slab *create_bio_slab(unsigned int size)
 	if (!bslab)
 		return NULL;
 
-	snprintf(bslab->name, sizeof(bslab->name), "bio-%d", size);
+	snprintf(bslab->name, sizeof(bslab->name), "bio-%u", size);
 	bslab->slab = kmem_cache_create(bslab->name, size,
 			ARCH_KMALLOC_MINALIGN,
 			SLAB_HWCACHE_ALIGN | SLAB_TYPESAFE_BY_RCU, NULL);