reaver: fix gcc warnings

+ Fix out of bounds access to elements[] in libwps
+ Fix memset to zap ctx in md5-internal.c

srcpkgs/reaver/patches/fix-libwps_elements_iterator.patch

@@ -0,0 +1,13 @@
+Fix the calculation of the number of iterations.
+
+--- src/libwps/libwps.c	2012-01-18 10:02:39.000000000 +0100
++++ src/libwps/libwps.c	2017-01-09 00:55:01.593948178 +0100
+@@ -83,7 +83,7 @@
+ 
+ 	if(wps_ie_data)
+ 	{
+-		for(i=0; i<sizeof(elements); i++)
++		for(i=0; i<sizeof(elements)/sizeof(elements[0]); i++)
+ 		{
+ 			/* Search for each WPS element inside the WPS IE data blob */
+ 			el = get_wps_data_element(wps_ie_data, wps_data_len, elements[i], &el_len);

srcpkgs/reaver/patches/fix-md5_ctx_memset.patch

@@ -0,0 +1,13 @@
+Fix size of memset which is what ctx points to.
+
+--- src/crypto/md5-internal.c	2012-01-18 10:02:40.000000000 +0100
++++ src/crypto/md5-internal.c	2017-01-09 00:57:00.889939319 +0100
+@@ -188,7 +188,7 @@
+     MD5Transform(ctx->buf, (u32 *) ctx->in);
+     byteReverse((unsigned char *) ctx->buf, 4);
+     os_memcpy(digest, ctx->buf, 16);
+-    os_memset(ctx, 0, sizeof(ctx));	/* In case it's sensitive */
++    os_memset(ctx, 0, sizeof(*ctx));	/* In case it's sensitive */
+ }
+ 
+ /* The four core functions - F1 is optimized somewhat */

srcpkgs/reaver/template

@@ -1,7 +1,7 @@
 # Template file for 'reaver'
 pkgname=reaver
 version=1.4
-revision=1
+revision=2
 build_style=gnu-configure
 build_wrksrc="src"
 conf_files="/etc/reaver/reaver.db"
@@ -15,8 +15,7 @@ checksum="add3050a4a05fe0ab6bfb291ee2de8e9b8a85f1e64ced93ee27a75744954b22d"
 
 post_extract() {
 	case "$XBPS_TARGET_MACHINE" in
-		*-musl)
+	*-musl) find -type f -exec sed -i "{}" -e"s;u_char;unsigned char;g" \;
-		find -type f -exec sed -i "{}" -e"s;u_char;unsigned char;g" \;
 		;;
 	esac
 }