Fix #includes of i*.h => Instructions.h as per PR403:

http://llvm.cs.uiuc.edu/PR403 .

llvm-svn: 15333

llvm/lib/CodeGen/UnreachableBlockElim.cpp

@@ -21,8 +21,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/Passes.h"
-#include "llvm/iPHINode.h"
 #include "llvm/Constant.h"
+#include "llvm/Instructions.h"
 #include "llvm/Function.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/CFG.h"