[gupnp-dlna] build: Drop g_clear_pointer fall-back

[Jens Georg <jensgeorg src gnome org>]

commit 157c1e87a44b002004741eb41180fad3a9e5a917
Author: Jens Georg <mail jensge org>
Date:   Sat Oct 26 14:10:55 2019 +0200

    build: Drop g_clear_pointer fall-back
    
    We require 2.38 anyway now

 configure.ac | 36 ------------------------------------
 1 file changed, 36 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index d9d2413..34ed2e3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -133,42 +133,6 @@ PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.38])
 PKG_CHECK_MODULES([GOBJECT], [gobject-2.0])
 PKG_CHECK_MODULES([GMODULE], [gmodule-2.0])
 
-# Check for g_clear_pointer
-have_g_clear_pointer='no'
-PKG_CHECK_EXISTS([glib-2.0 >= 2.34],
-                 [have_g_clear_pointer='yes'])
-AS_VAR_IF([have_g_clear_pointer], [no],
-          [AC_MSG_CHECKING([for g_clear_pointer])
-           GUPNP_DLNA_TEMP_CFLAGS="$CFLAGS"
-           CFLAGS="$CFLAGS $GLIB_CFLAGS"
-           GUPNP_DLNA_TEMP_LIBS="$LIBS"
-           LIBS="$LIBS $GLIB_LIBS"
-           AC_LANG([C])
-           AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-                                             #include <glib.h>
-                                           ]],
-                                           [[
-                                             gchar *test = g_malloc (2);
-                                             g_clear_pointer (&test, g_free);
-                                             return (test == NULL)
-                                           ]])],
-                          [have_g_clear_pointer='yes'])
-          LIBS="$GUPNP_DLNA_TEMP_LIBS"
-          CFLAGS="$GUPNP_DLNA_TEMP_CFLAGS"
-          AC_MSG_RESULT([$have_g_clear_pointer])])
-
-AS_VAR_IF([have_g_clear_pointer], [no],
-          [AC_DEFINE([g_clear_pointer(ptr, func)],
-                     [\
-                      G_STMT_START { \
-                        if (ptr != NULL && func != NULL) { \
-                          gpointer g_clear_pointer_tmp_var = *ptr; \
-                          *ptr = NULL; \
-                          func (g_clear_pointer_tmp_var); \
-                        } \
-                      } G_STMT_END],
-                     [Naive g_clear_pointer implementation.])])
-
 # Debugging
 AC_ARG_ENABLE([debug],
               AS_HELP_STRING([--enable-debug], [enable debugging @<:@default=no@:>@]),