buffers: fix typo

Change-Id: I4e836244409c98739a13092ee252542a2c5fe259
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/pg/input.c b/src/vnet/pg/input.c
index 6ef813f..138a575 100644
--- a/src/vnet/pg/input.c
+++ b/src/vnet/pg/input.c
@@ -1199,7 +1199,7 @@
   u32 *buffers;
   vlib_main_t *vm = vlib_get_main ();
   vnet_main_t *vnm = vnet_get_main ();
-  u32 buf_sz = vlib_bufer_get_default_size (vm);
+  u32 buf_sz = vlib_buffer_get_default_data_size (vm);
   vnet_interface_main_t *im = &vnm->interface_main;
   vnet_sw_interface_t *si;