[SelectionDAG] Pass explicit type to lowerCallOperands. NFC.

Summary:
Currently this does not change anything, but change will be used in a
later change to StatepointLowering.cpp

Reviewers: reames, atrick

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9477

llvm-svn: 236553
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index f812507..f3e5253 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -711,7 +711,7 @@
           unsigned ArgIdx,
           unsigned NumArgs,
           SDValue Callee,
-          bool UseVoidTy = false,
+          Type *ReturnTy,
           MachineBasicBlock *LandingPad = nullptr,
           bool IsPatchPoint = false);