Fix wrong args.

--- eflite-0.4.1/es.c	2007-01-19 00:01:09.000000000 +0000
+++ eflite-0.4.1/es.c	2025-07-06 18:15:36.599424852 +0100
@@ -567,7 +567,7 @@
   }
   else if ((!strcmp (buf, "r") || !strcmp(buf, "tts_set_speech_rate")) && token[0])
   {
-    if (text_buffered) es_synthesize(client);
+    if (text_buffered) es_synthesize();
     /* In the libspeech api, a rate of 1000 is defined as "normal."  Thus, fs.c
 	defines a rate of 1000 as equivalent to FLite's normal rate (about 175
 	wpm).  The following conversion is accurate for it but may not be
@@ -577,7 +577,7 @@
   }
   else if ((!strcmp (buf, "v") || !strcmp(buf, "tts_set_speech_volume")) && token[0])
   {
-    if (text_buffered) es_synthesize(client);
+    if (text_buffered) es_synthesize();
     client->param[S_VOLUME] = atoi(token[0]);
   }
   else if (!strcmp (buf, "reset"))