Fix compilation under Cygwin (patch #6916)

src/core/wee-config.c

@@ -1967,7 +1967,7 @@ config_weechat_init_options ()
         N_("standard plugins extension in filename (for example "
            "\".so\" under Linux or \".dll\" under Microsoft Windows)"),
         NULL, 0, 0,
-#ifdef WIN32
+#if defined(WIN32) || defined(__CYGWIN__)
         ".dll",
 #else
         ".so",

src/core/wee-network.c

@@ -897,7 +897,7 @@ network_connect_with_fork (struct t_hook *hook_connect)
        any suggestion is welcome to improve that!
     */
     network_connect_child (hook_connect);
-    network_connect_child_read_cb (hook_connect);
+    network_connect_child_read_cb (hook_connect, 0);
 #else
     switch (pid = fork ())
     {