Revert "http/transport: add missing init"

This reverts commit e6ef1ae0.
This made no sense.

modules/access/http/transport.c

@@ -133,7 +133,7 @@ vlc_tls_t *vlc_https_connect(vlc_tls_creds_t *creds, const char *name,
 
     /* TLS with ALPN */
     const char *alpn[] = { "h2", "http/1.1", NULL };
-    char *alp = NULL;
+    char *alp;
 
     vlc_tls_t *tls = vlc_tls_ClientSessionCreate(creds, fd, name, "https",
                                                  alpn, &alp);