Fix error reporting in the PNaCl bitcode reader.

tools/llvm-dis/llvm-dis.cpp

Index: tools/llvm-dis/llvm-dis.cpp
diff --git a/tools/llvm-dis/llvm-dis.cpp b/tools/llvm-dis/llvm-dis.cpp
index bdce91184a377f36175d2469ce0b2109b2d1be0d..6beced365b98b2a77083ca2c334fb18f7a516f2b 100644
--- a/tools/llvm-dis/llvm-dis.cpp
+++ b/tools/llvm-dis/llvm-dis.cpp
@@ -160,10 +160,12 @@ int main(int argc, char **argv) {
         M.reset(getStreamedBitcodeModule(
             DisplayFilename, Buffer.release(), Context, &ErrorMessage));
         break;
-      case PNaClFormat:
+      case PNaClFormat: {
         M.reset(getNaClStreamedBitcodeModule(
-            DisplayFilename, Buffer.release(), Context, &ErrorMessage));
+            DisplayFilename, Buffer.release(), Context, nullptr,
+            &ErrorMessage));
         break;
+      }
       default:
         ErrorMessage = "Don't understand specified bitcode format";
         break;