Removed more <iostream> includes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32321 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 8d8e9b7..a626f4f 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -19,7 +19,6 @@
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/LeakDetector.h"
-#include <iostream>
 #include <algorithm>
 using namespace llvm;
 
@@ -87,7 +86,7 @@
 }
 
 void MachineBasicBlock::dump() const {
-  print(std::cerr);
+  print(*cerr.stream());
 }
 
 void MachineBasicBlock::print(std::ostream &OS) const {