Silence warning about unused variable in builds without asserts [NFC]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356648 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LICM.cpp b/lib/Transforms/Scalar/LICM.cpp
index 8c4d2cd..9efc3d2 100644
--- a/lib/Transforms/Scalar/LICM.cpp
+++ b/lib/Transforms/Scalar/LICM.cpp
@@ -1213,6 +1213,7 @@
                 return false;
             } else if (const auto *MD = dyn_cast<MemoryDef>(&MA))
               if (auto *LI = dyn_cast<LoadInst>(MD->getMemoryInst())) {
+                (void)LI; // Silence warning.
                 assert(!LI->isUnordered() && "Expected unordered load");
                 return false;
               }