[XRay] Remove unused reference

The reference was only used in the assertion.

Follow-up on D51723.

llvm-svn: 341771

diff --git a/llvm/lib/XRay/BlockVerifier.cpp b/llvm/lib/XRay/BlockVerifier.cpp
index 3bd1190..62be1a8 100644 (file)
--- a/llvm/lib/XRay/BlockVerifier.cpp
+++ b/llvm/lib/XRay/BlockVerifier.cpp
@@ -112,9 +112,9 @@ Error BlockVerifier::transition(State To) {
     return Error::success();
 
   auto &Mapping = TransitionTable[number(CurrentRecord)];
-  auto &From = Mapping.From;
   auto &Destinations = Mapping.ToStates;
-  assert(From == CurrentRecord && "BUG: Wrong index for record mapping.");
+  assert(Mapping.From == CurrentRecord &&
+         "BUG: Wrong index for record mapping.");
   if ((Destinations & ToSet(mask(To))) == 0)
     return createStringError(
         std::make_error_code(std::errc::executable_format_error),