Fix an API breakage.

Author: htyu

test/lib/Instrumentation/GPUHello.cpp

@@ -61,7 +61,7 @@ bool GpuHello::runOnModule(Module &module) {
 
 PassPluginLibraryInfo getPassPluginInfo() {
   const auto callback = [](PassBuilder &pb) {
-    pb.registerOptimizerLastEPCallback([&](ModulePassManager &mpm, auto) {
+    pb.registerOptimizerLastEPCallback([&](ModulePassManager &mpm, auto, auto) {
       mpm.addPass(GpuHello());
       return true;
     });