Remove the unused variable in voices.c.

src/libespeak-ng/voices.c

@@ -1466,10 +1466,8 @@ static void GetVoices(const char *path, int len_path_voices, int is_language_fil
 
 #pragma GCC visibility push(default)
 
-
 ESPEAK_NG_API espeak_ng_STATUS espeak_ng_SetVoiceByFile(const char *filename)
 {
-	espeak_VOICE *v;
 	int ix;
 	espeak_VOICE voice_selector;
 	char *variant_name;
@@ -1504,7 +1502,6 @@ ESPEAK_NG_API espeak_ng_STATUS espeak_ng_SetVoiceByFile(const char *filename)
 	return ENS_VOICE_NOT_FOUND;
 }
 
-
 ESPEAK_NG_API espeak_ng_STATUS espeak_ng_SetVoiceByName(const char *name)
 {
 	espeak_VOICE *v;