MT#56128 SDP manipulations: improve efficiency of `sdp_manipulate_check`

Improve an efficiency of the code in terms of not checking anything
inside the function, if the `sdp_manipulation` flags are absent.

Change-Id: I2a5d8cf675a73ec7a2b4af94d5c7fe2f18fc1772

daemon/sdp.c

@@ -306,6 +306,11 @@ static int sdp_manipulate_subst_cmp(gconstpointer a, gconstpointer b) {
 static int sdp_manipulate_check(enum command_type command_type,
 		struct sdp_manipulations_common * sdp_manipulations,
 		enum media_type media_type, str * attr_name) {
+
+	/* no need for checks, if not given in flags */
+	if (!sdp_manipulations)
+		return 0;
+
 	/* for now we only support session lvl, audio and media streams */
 	if (media_type == MT_OTHER)
 	{
@@ -314,10 +319,6 @@ static int sdp_manipulate_check(enum command_type command_type,
 		return 0;
 	}
 
-	/* no need for checks, if not given in flags */
-	if (!sdp_manipulations)
-		return 0;
-
 	GQueue * q_ptr = NULL;
 
 	switch (command_type) {