[InferAddressSpaces] Fix fallthrough error


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354580 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/InferAddressSpaces.cpp b/lib/Transforms/Scalar/InferAddressSpaces.cpp
index 8f5ddf7..1501b48 100644
--- a/lib/Transforms/Scalar/InferAddressSpaces.cpp
+++ b/lib/Transforms/Scalar/InferAddressSpaces.cpp
@@ -221,6 +221,7 @@
   switch (Op.getOpcode()) {
   case Instruction::PHI:
     assert(Op.getType()->isPointerTy());
+    return true;
   case Instruction::BitCast:
   case Instruction::AddrSpaceCast:
   case Instruction::GetElementPtr: