TT#89352 return proper ICE candidate parsing result

Change-Id: I6bdd5db074eae0dccb86bb50d1370154bb024bf2

daemon/sdp.c

@@ -702,6 +702,9 @@ static int parse_attribute_candidate(struct sdp_attribute *output, bool extended
 	return 0;
 }
 
+// 0 = success
+// -1 = error
+// 1 = parsed ok but unsupported candidate type
 int sdp_parse_candidate(struct ice_candidate *cand, const str *s) {
 	struct sdp_attribute attr = {
 		.value = *s,
@@ -710,7 +713,7 @@ int sdp_parse_candidate(struct ice_candidate *cand, const str *s) {
 	if (parse_attribute_candidate(&attr, true))
 		return -1;
 	if (!attr.u.candidate.parsed)
-		return -1;
+		return 1;
 	*cand = attr.u.candidate.cand_parsed;
 
 	return 0;

include/sdp.h

@@ -28,7 +28,7 @@ int sdp_replace(struct sdp_chopper *, GQueue *, struct call_monologue *, struct
 int sdp_is_duplicate(GQueue *sessions);
 int sdp_create(str *out, struct call_monologue *, struct sdp_ng_flags *flags);
 
-int sdp_parse_candidate(struct ice_candidate *cand, const str *s);
+int sdp_parse_candidate(struct ice_candidate *cand, const str *s); // returns -1, 0, 1
 
 struct sdp_chopper *sdp_chopper_new(str *input);
 void sdp_chopper_destroy(struct sdp_chopper *chop);