Subzero: Enable errors for unused parameters.

src/IceGlobalInits.h

Index: src/IceGlobalInits.h
diff --git a/src/IceGlobalInits.h b/src/IceGlobalInits.h
index 48658e133f9c2ace1277ac2e7b3d4c890840a08c..08f4fe3afcc24e8c4ba00b226d094fe8a1fdb544 100644
--- a/src/IceGlobalInits.h
+++ b/src/IceGlobalInits.h
@@ -20,9 +20,13 @@
 #include "IceDefs.h"
 #include "IceGlobalContext.h"
 #include "IceTypes.h"
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-parameter"
 #include "llvm/Bitcode/NaCl/NaClBitcodeParser.h" // for NaClBitcodeRecord.
 #include "llvm/IR/CallingConv.h"
 #include "llvm/IR/GlobalValue.h" // for GlobalValue::LinkageTypes.
+#pragma clang diagnostic pop
 
 #include <memory>
 #include <utility>