Fix unused variable warning in r332724

llvm-svn: 332734
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index b7e86cb..4f3d46e 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -1330,6 +1330,7 @@
       C.getSingleOffloadToolChain<Action::OFK_HIP>());
   assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
          "Wrong platform");
+  (void)HIPTC;
 
   // Construct clang-offload-bundler command to bundle object files for
   // for different GPU archs.