master 41a55a3: Fix compilation of xftfont.c with old fontconfig

[Eli Zaretskii]

branch: master
commit 41a55a330f518254da795719ac6e3085254d4110
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Fix compilation of xftfont.c with old fontconfig
    
    * src/xftfont.c (FC_LCD_FILTER): Define if undefined, for older
    versions of fontconfig.  This was mistakenly deleted 2 years ago.
    (Bug#49722)
---
 src/xftfont.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/xftfont.c b/src/xftfont.c
index f734931..d8ad403 100644
--- a/src/xftfont.c
+++ b/src/xftfont.c
@@ -33,6 +33,12 @@ along with GNU Emacs.  If not, see 
<https://www.gnu.org/licenses/>.  */
 #include "ftfont.h"
 #include "pdumper.h"
 
+#ifndef FC_LCD_FILTER
+/* Older fontconfig versions don't have FC_LCD_FILTER.  */
+# define FC_LCD_FILTER "lcdfilter"
+#endif
+
+
 /* Xft font driver.  */
 
 /* Structure pointed by (struct face *)->extra  */