Construct the MCStreamer before constructing the MCTargetStreamer.

This has a few advantages:
* Only targets that use a MCTargetStreamer have to worry about it.
* There is never a MCTargetStreamer without a MCStreamer, so we can use a
  reference.
* A MCTargetStreamer can talk to the MCStreamer in its constructor.

llvm-svn: 200129
diff --git a/llvm/lib/LTO/LTOModule.cpp b/llvm/lib/LTO/LTOModule.cpp
index c5c817c..c1a9f80 100644
--- a/llvm/lib/LTO/LTOModule.cpp
+++ b/llvm/lib/LTO/LTOModule.cpp
@@ -623,7 +623,7 @@
       return Symbols.end();
     }
 
-    RecordStreamer(MCContext &Context) : MCStreamer(Context, 0) {}
+    RecordStreamer(MCContext &Context) : MCStreamer(Context) {}
 
     virtual void EmitInstruction(const MCInst &Inst) {
       // Scan for values.