Fix examples compile break due to rewrite of isa.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131912 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/examples/clang-interpreter/main.cpp b/examples/clang-interpreter/main.cpp
index ad39ece..16f4dab 100644
--- a/examples/clang-interpreter/main.cpp
+++ b/examples/clang-interpreter/main.cpp
@@ -94,7 +94,7 @@
   // We expect to get back exactly one command job, if we didn't something
   // failed. Extract that job from the compilation.
   const driver::JobList &Jobs = C->getJobs();
-  if (Jobs.size() != 1 || !isa<driver::Command>(Jobs.begin())) {
+  if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) {
     llvm::SmallString<256> Msg;
     llvm::raw_svector_ostream OS(Msg);
     C->PrintJob(OS, C->getJobs(), "; ", true);