eliminate calls to deprecated Use::init() interface

llvm-svn: 51570
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 4fa08a0..818b47c 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -180,7 +180,7 @@
 
   // Create and return a placeholder, which will later be RAUW'd.
   Constant *C = new ConstantPlaceHolder(Ty);
-  OperandList[Idx].init(C, this);
+  OperandList[Idx] = C;
   return C;
 }
 
@@ -201,7 +201,7 @@
   
   // Create and return a placeholder, which will later be RAUW'd.
   Value *V = new Argument(Ty);
-  OperandList[Idx].init(V, this);
+  OperandList[Idx] = V;
   return V;
 }