smalloc: kill another debug printf()

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/smalloc.c b/smalloc.c
index 3d3986b..c03c404 100644
--- a/smalloc.c
+++ b/smalloc.c
@@ -439,10 +439,8 @@
 #endif
 
 	ptr = __smalloc_pool(pool, alloc_size);
-	if (!ptr) {
-		printf("failed allocating %u\n", alloc_size);
+	if (!ptr)
 		return NULL;
-	}
 
 	hdr = ptr;
 	hdr->size = alloc_size;