wireguard: bump to 0.0.20180802

Changelog taken from the version announcement

> == Changes ==
>
>   * chacha20poly1305: selftest: split up test vector constants
>
>   The test vectors are encoded as long strings -- really long strings -- and
>   apparently RFC821 doesn't like lines longer than 998.
>   https://cr.yp.to/smtp/message.html
>
>   * queueing: keep reference to peer after setting atomic state bit
>
>   This fixes a regression introduced when preparing the LKML submission.
>
>   * allowedips: prevent double read in kref
>   * allowedips: avoid window of disappeared peer
>   * hashtables: document immediate zeroing semantics
>   * peer: ensure resources are freed when creation fails
>   * queueing: document double-adding and reference conditions
>   * queueing: ensure strictly ordered loads and stores
>   * cookie: returned keypair might disappear if rcu lock not held
>   * noise: free peer references on failure
>   * peer: ensure destruction doesn't race
>
>   Various fixes, as well as lots of code comment documentation, for a
>   small variety of the less obvious aspects of object lifecycles,
>   focused on correctness.
>
>   * allowedips: free root inside of RCU callback
>   * allowedips: use different macro names so as to avoid confusion
>
>   These incorporate two suggestions from LKML.
>
> This snapshot contains commits from: Jason A. Donenfeld and Jann Horn.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

package/network/services/wireguard/Makefile

@@ -11,12 +11,12 @@ include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=wireguard
 
-PKG_VERSION:=0.0.20180718
-PKG_RELEASE:=2
+PKG_VERSION:=0.0.20180802
+PKG_RELEASE:=1
 
 PKG_SOURCE:=WireGuard-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://git.zx2c4.com/WireGuard/snapshot/
-PKG_HASH:=083c093a6948c8d38f92e7ea5533f9ff926019f24dc2612ea974851ed3e24705
+PKG_HASH:=cd1da34b377d58df760aadf69ced045081517570586fc2d4eed7f09f5d5a47c6
 
 PKG_LICENSE:=GPL-2.0 Apache-2.0
 PKG_LICENSE_FILES:=COPYING