[MachineVerifier] Drop a spurious const

As of r298987 the argument is a value that we std::move, so it
shouldn't be const anymore.

llvm-svn: 298999

diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index 5c263b3..fc40261 100644 (file)
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -260,7 +260,7 @@ namespace {
     static char ID; // Pass ID, replacement for typeid
     const std::string Banner;
 
-    MachineVerifierPass(const std::string banner = std::string())
+    MachineVerifierPass(std::string banner = std::string())
       : MachineFunctionPass(ID), Banner(std::move(banner)) {
         initializeMachineVerifierPassPass(*PassRegistry::getPassRegistry());
       }