Fix a typo in MachineInstr::unbundleFromSucc() method.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171983 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 29d8866..a4d9813 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -897,7 +897,7 @@
   assert(isBundledWithSucc() && "MI isn't bundled with its successor");
   clearFlag(BundledSucc);
   MachineBasicBlock::instr_iterator Succ = this;
-  --Succ;
+  ++Succ;
   assert(Succ->isBundledWithPred() && "Inconsistent bundle flags");
   Succ->clearFlag(BundledPred);
 }