Use linked list for siso_watch_list elements

pa_siso_watch_list.c

@@ -49,10 +49,7 @@ uint32_t siso_watch_get_first_or_default(struct siso_watch *w, uint32_t default_
 }
 
 struct siso_watch *siso_add_name(struct siso_watch_list *wl, const char* name) {
-	wl->len++;
-	wl->items = realloc(wl->items,
-			sizeof(struct siso_watch *) * wl->len);
-	struct siso_watch *item = wl->items[wl->len - 1] = calloc(1, sizeof(struct siso_watch));
+	struct siso_watch *item = calloc(1, sizeof(struct siso_watch));
 	item->name = strdup(name);
 	item->target = -1;
 	item->mute = true;
@@ -60,22 +57,24 @@ struct siso_watch *siso_add_name(struct siso_watch_list *wl, const char* name) {
 	item->sisos.items = NULL;
 	item->volume_changed = NULL;
 	item->userdata = NULL;
+	item->next = wl->head;
+	wl->head = item;
 
 	return item;
 }
 
 struct siso_watch *siso_get(struct siso_watch_list *wl, const char *name) {
-	for (size_t i = 0; i < wl->len; i++) {
-		int offset = strlen(name) - strlen(wl->items[i]->name);
-		if (strcmp(wl->items[i]->name, name + offset) == 0) {
-			return wl->items[i];
+	for (struct siso_watch *w = wl->head; w != NULL; w = w->next) {
+		int offset = strlen(name) - strlen(w->name);
+		if (strcmp(w->name, name + offset) == 0) {
+			return w;
 		}
 	}
 	return NULL;
 }
 
 void siso_remove_index(struct siso_watch_list *wl, uint32_t pa_index) {
-	for (size_t i = 0; i < wl->len; i++) {
-		siso_watch_remove_index(wl->items[i], pa_index);
+	for (struct siso_watch *w = wl->head; w != NULL; w = w->next) {
+		siso_watch_remove_index(w, pa_index);
 	}
 }

pa_siso_watch_list.h

@@ -14,6 +14,7 @@ struct siso {
 };
 
 struct siso_watch {
+	struct siso_watch *next;
 	const char *name;
 	uint32_t target; // sink in case of watching a sink input
 	bool mute;
@@ -26,8 +27,7 @@ struct siso_watch {
 };
 
 struct siso_watch_list {
-	size_t len;
-	struct siso_watch **items;
+	struct siso_watch *head;
 };
 
 void siso_watch_remove_index(struct siso_watch *w, uint32_t pa_index);