Fix memory leak, uninitialized memory

src/core/lib/surface/server.c

@@ -750,6 +750,11 @@ static void server_on_recv_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
         GRPC_MDVALUE(calld->recv_initial_metadata->idx.named.authority->md));
     calld->path_set = true;
     calld->host_set = true;
+    grpc_metadata_batch_remove(exec_ctx, calld->recv_initial_metadata,
+                               calld->recv_initial_metadata->idx.named.path);
+    grpc_metadata_batch_remove(
+        exec_ctx, calld->recv_initial_metadata,
+        calld->recv_initial_metadata->idx.named.authority);
   } else {
     GRPC_ERROR_REF(error);
   }

test/core/end2end/fixtures/proxy.c

@@ -308,6 +308,7 @@ static void on_p2s_status(void *arg, int success) {
     op.data.send_status_from_server.trailing_metadata =
         pc->p2s_trailing_metadata.metadata;
     op.data.send_status_from_server.status = pc->p2s_status;
+    op.data.send_status_from_server.status_details = &pc->p2s_status_details;
     refpc(pc, "on_c2p_sent_status");
     err = grpc_call_start_batch(pc->c2p, &op, 1,
                                 new_closure(on_c2p_sent_status, pc), NULL);