vlib: make vlib_pending_frame_t smaller

Type: improvement
Change-Id: I8715631718dca9bc7d7b364451b137484aadd58e
Signed-off-by: Damjan Marion <damarion@cisco.com>

src/vlib/node.h

@@ -439,12 +439,12 @@ vlib_next_frame_init (vlib_next_frame_t * nf)
 /* A frame pending dispatch by main loop. */
 typedef struct
 {
-  /* Node and runtime for this frame. */
-  u32 node_runtime_index;
-
   /* Frame index (in the heap). */
   vlib_frame_t *frame;
 
+  /* Node and runtime for this frame. */
+  u32 node_runtime_index;
+
   /* Start of next frames for this node. */
   u32 next_frame_index;