From bd8709bc824822ee67a6668d2945312e79a0b4d2 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Mon, 21 Aug 2017 22:33:01 +0200
Subject: [PATCH] Simplify pbuf_remove_header() a bit

---
 src/core/pbuf.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/src/core/pbuf.c b/src/core/pbuf.c
index a2daf715..814127f8 100644
--- a/src/core/pbuf.c
+++ b/src/core/pbuf.c
@@ -593,14 +593,8 @@ pbuf_remove_header(struct pbuf *p, size_t header_size_decrement)
   payload = p->payload;
   LWIP_UNUSED_ARG(payload); /* only used in LWIP_DEBUGF below */
 
-  if (increment_magnitude <= p->len) {
-    /* increase payload pointer */
-    p->payload = (u8_t *)p->payload + header_size_decrement;
-  } else {
-    /* cannot expand payload to front (yet!)
-      * bail out unsuccessfully */
-    return 1;
-  }
+  /* increase payload pointer (guarded by length check above) */
+  p->payload = (u8_t *)p->payload + header_size_decrement;
   /* modify pbuf length fields */
   p->len = (u16_t)(p->len - increment_magnitude);
   p->tot_len = (u16_t)(p->tot_len - increment_magnitude);