dev-libs/libmemcached: fix build failure against gcc-7

Acked-by: prometheanfire
Package-Manager: Portage-2.3.5, Repoman-2.3.2

dev-libs/libmemcached/files/libmemcached-1.0.18-gcc7.patch

@@ -0,0 +1,29 @@
+gcc-7 fails the build as:
+  clients/memflush.cc: In function 'int main(int, char**)':
+  clients/memflush.cc:42:22: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
+   if (opt_servers == false)
+                      ^~~~~
+
+opt_servers is declated as 'static char *opt_servers= NULL;'
+diff --git a/clients/memflush.cc b/clients/memflush.cc
+index 8bd0dbf..7641b88 100644
+--- a/clients/memflush.cc
++++ b/clients/memflush.cc
+@@ -39,7 +39,7 @@ int main(int argc, char *argv[])
+ {
+   options_parse(argc, argv);
+
+-  if (opt_servers == false)
++  if (!opt_servers)
+   {
+     char *temp;
+
+@@ -48,7 +48,7 @@ int main(int argc, char *argv[])
+       opt_servers= strdup(temp);
+     }
+
+-    if (opt_servers == false)
++    if (!opt_servers)
+     {
+       std::cerr << "No Servers provided" << std::endl;
+       exit(EXIT_FAILURE);

dev-libs/libmemcached/libmemcached-1.0.18-r3.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -25,6 +25,7 @@ RDEPEND="${DEPEND}"
 src_prepare() {
 	epatch "${FILESDIR}/debug-disable-enable-1.0.18.patch"
 	epatch "${FILESDIR}/continuum-1.0.18.patch"
+	epatch "${FILESDIR}"/${P}-gcc7.patch
 	sed -i '6i CFLAGS = @CFLAGS@' Makefile.am
 	sed -e "/_APPEND_COMPILE_FLAGS_ERROR(\[-fmudflapth\?\])/d" -i m4/ax_harden_compiler_flags.m4
 	eautoreconf