MT#55283 change amr_cn_dtx option to bool

Change-Id: Ife3d89d8c133b14bf42b6c3468675a6147882681
(cherry picked from commit 7e30f816e4)

daemon/main.c

@@ -974,7 +974,7 @@ static void options(int *argc, char ***argv) {
 	if (amr_dtx) {
 		if (!strcasecmp(amr_dtx, "native")) {}
 		else if (!strcasecmp(amr_dtx, "CN"))
-			rtpe_config.amr_cn_dtx = 1;
+			rtpe_config.amr_cn_dtx = true;
 		else
 			die("Invalid --amr-dtx ('%s')", amr_dtx);
 	}

include/main.h

@@ -146,7 +146,7 @@ struct rtpengine_config {
 	int			dtx_lag;
 	int			dtx_shift;
 	str			dtx_cn_params;
-	int			amr_cn_dtx;
+	bool			amr_cn_dtx;
 	double			silence_detect_double;
 	uint32_t		silence_detect_int;
 	str			cn_payload;