bl00mbox: no more memset

components/bl00mbox/.clang-tidy

-Checks: '-clang-diagnostic-incompatible-pointer-types'
+Checks: '-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,-clang-diagnostic-deprecated-declarations,-clang-diagnostic-incompatible-pointer-types'

components/bl00mbox/bl00mbox_user.c

@@ -388,7 +388,10 @@ bool bl00mbox_channel_connect_signal_to_output_mixer(
     if (root == NULL) return false;
     bl00mbox_connection_subscriber_t *sub =
         malloc(sizeof(bl00mbox_connection_subscriber_t));
-    if (sub == NULL) return false;
+    if (sub == NULL){
+        free(root);
+        return false;
+    }
 
     bl00mbox_connection_t *conn;
     if (tx->buffer == NULL) {  // doesn't feed a buffer yet
@@ -408,7 +411,11 @@ bool bl00mbox_channel_connect_signal_to_output_mixer(
         if (conn->subs != NULL) {
             bl00mbox_connection_subscriber_t *seek = conn->subs;
             while (seek != NULL) {
-                if (seek->type == 1) return false;  // already connected
+                if (seek->type == 1){
+                    free(root);
+                    free(sub);
+                    return false;  // already connected
+                }
                 seek = seek->next;
             }
         }