Fix versioner for clang update.

Bug: 171348143
Test: build versioner.
Change-Id: I7432bdba6b021fcfa22207a186978e0ca336c4cb
diff --git a/tools/versioner/src/Driver.cpp b/tools/versioner/src/Driver.cpp
index adf93c3..24dc5ec 100644
--- a/tools/versioner/src/Driver.cpp
+++ b/tools/versioner/src/Driver.cpp
@@ -149,7 +149,7 @@
   cmd.push_back("-");
 
   auto diags = constructDiags();
-  driver::Driver driver("versioner", llvm::sys::getDefaultTargetTriple(), *diags, vfs);
+  driver::Driver driver("versioner", llvm::sys::getDefaultTargetTriple(), *diags, "versioner", vfs);
   driver.setCheckInputsExist(false);
 
   llvm::SmallVector<const char*, 32> driver_args;