Eliminate some unused variable compile time warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59952 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index b45a4fd..037a46d 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -401,6 +401,7 @@
       bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
                                            Reg, RC, RC);
       assert(InsertedCopy && "Can't copy address registers!");
+      InsertedCopy = InsertedCopy;
       UpdateValueMap(I, ResultReg);
       return true;
     }
@@ -434,6 +435,7 @@
         bool InsertedCopy = TII.copyRegToReg(*MBB, MBB->end(), ResultReg,
                                              Reg, RC, RC);
         assert(InsertedCopy && "Can't copy address registers!");
+        InsertedCopy = InsertedCopy;
         UpdateValueMap(I, ResultReg);
       } else {
         unsigned ResultReg =