pkg/wolfssl: bump version to 4.3.0

Update to the latest upstream release

https://www.wolfssl.com/docs/wolfssl-changelog/

This unfortunetaly introduced some unused parameter warnings, so add
a patch to address those.

Author: benpicco

pkg/wolfssl/Makefile

@@ -1,6 +1,6 @@
 PKG_NAME=wolfssl
 PKG_URL=https://github.com/wolfssl/wolfssl.git
-PKG_VERSION=eaeaaf12c11dd52ab0cd6833252ed559656e9826 # v4.1.0+
+PKG_VERSION=3f13b49fa318fbd3216d7da36d942e7c276d3413 # v4.3.0+
 PKG_LICENSE=GPLv2
 
 include $(RIOTBASE)/pkg/pkg.mk

pkg/wolfssl/patches/0001-Fix-unused-parameter-warnings.patch

@@ -0,0 +1,48 @@
+From 8d58f18ad8c1f2cafad443002acfeb1253a541bd Mon Sep 17 00:00:00 2001
+From: Benjamin Valentin <[email protected]>
+Date: Sun, 2 Feb 2020 15:27:26 +0100
+Subject: [PATCH] Fix unused parameter warnings
+
+---
+ src/ssl.c                 | 4 ++++
+ wolfssl/wolfcrypt/types.h | 2 +-
+ 2 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/ssl.c b/src/ssl.c
+index fc2aa63bf..3d2d48e58 100644
+--- a/src/ssl.c
++++ b/src/ssl.c
+@@ -5214,6 +5214,8 @@ static int ProcessBufferTryDecode(WOLFSSL_CTX* ctx, WOLFSSL* ssl, DerBuffer* der
+     int* keySz, word32* idx, int* resetSuites, int *rsaKey, int *eccKey,
+     int *ed25519Key, void* heap, int devId)
+ {
++    (void) heap;
++
+     int ret = 0;
+ 
+     if (ctx == NULL && ssl == NULL)
+@@ -5341,6 +5343,8 @@ static int ProcessBufferTryDecode(WOLFSSL_CTX* ctx, WOLFSSL* ssl, DerBuffer* der
+         XFREE(key, heap, DYNAMIC_TYPE_ECC);
+     #endif
+     }
++#else
++    (void) devId;
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+     if (ret == 0 && !*rsaKey && !*eccKey) {
+diff --git a/wolfssl/wolfcrypt/types.h b/wolfssl/wolfcrypt/types.h
+index e80351566..2b9e29dcb 100644
+--- a/wolfssl/wolfcrypt/types.h
++++ b/wolfssl/wolfcrypt/types.h
+@@ -313,7 +313,7 @@
+         #else
+         /* just use plain C stdlib stuff if desired */
+         #include <stdlib.h>
+-        #define XMALLOC(s, h, t)     malloc((s))
++        #define XMALLOC(s, h, t)     malloc((s)); (void)(h); (void)(t)
+         #define XFREE(p, h, t)       {void* xp = (p); if((xp)) free((xp));}
+         #define XREALLOC(p, n, h, t) realloc((p), (n))
+         #endif
+-- 
+2.20.1
+