libmemcached: fix build failure #10780

Add patch for that compares pointer to NULL instead of false.

srcpkgs/libmemcached/patches/memflush.patch

@@ -0,0 +1,20 @@
+--- ./clients/memflush.cc
++++ ./clients/memflush.cc
+@@ -39,7 +39,7 @@
+ {
+   options_parse(argc, argv);
+ 
+-  if (opt_servers == false)
++  if (opt_servers == NULL)
+   {
+     char *temp;
+ 
+@@ -48,7 +48,7 @@
+       opt_servers= strdup(temp);
+     }
+ 
+-    if (opt_servers == false)
++    if (opt_servers == NULL)
+     {
+       std::cerr << "No Servers provided" << std::endl;
+       exit(EXIT_FAILURE);

srcpkgs/libmemcached/template

@@ -1,7 +1,7 @@
 # Template build file for 'libmemcached'
 pkgname=libmemcached
 version=1.0.18
-revision=2
+revision=3
 build_style=gnu-configure
 configure_args="--prefix=/usr"
 short_desc="C/C++ library to memcached"