[LPM] Simplify this code and fix a compile error for compilers that

don't correctly implement the scoping rules of C++11 range based for
loops. This kind of aliasing isn't a good idea anyways (and wasn't
really intended).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247241 91177308-0d34-0410-b5e6-96231b3b80d8

lib/IR/LegacyPassManager.cpp

@@ -729,9 +729,7 @@ void PMTopLevelManager::addImmutablePass(ImmutablePass *P) {
   // fast lookup.
   const PassInfo *PassInf = findAnalysisPassInfo(AID);
   assert(PassInf && "Expected all immutable passes to be initialized");
-  const std::vector<const PassInfo*> &ImmPI =
-    PassInf->getInterfacesImplemented();
-  for (const PassInfo *ImmPI : ImmPI)
+  for (const PassInfo *ImmPI : PassInf->getInterfacesImplemented())
     ImmutablePassMap[ImmPI->getTypeInfo()] = P;
 }