fix(fe-text): replace strdup with g_strdup for C17 builds

src/fe-text/fe-text.c

@@ -17,7 +17,7 @@
  */
 
 #include "config.h"
-
+#include <glib.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -538,7 +538,7 @@ fe_args (int argc, char *argv[])
 	if (arg_cfgdir)	/* we want filesystem encoding */
 	{
 		g_free (xdir);
-		xdir = strdup (arg_cfgdir);
+		xdir = g_strdup(arg_cfgdir);
 		if (xdir[strlen (xdir) - 1] == '/')
 			xdir[strlen (xdir) - 1] = 0;
 		g_free (arg_cfgdir);