Use SmallVectorImpl::iterator/const_iterator instead of SmallVector to avoid specifying the vector size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185606 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LazyValueInfo.cpp b/lib/Analysis/LazyValueInfo.cpp
index 66b5e85..b6970af 100644
--- a/lib/Analysis/LazyValueInfo.cpp
+++ b/lib/Analysis/LazyValueInfo.cpp
@@ -421,8 +421,8 @@
     if (I->second == getValPtr())
       ToErase.push_back(*I);
   }
-  
-  for (SmallVector<OverDefinedPairTy, 4>::iterator I = ToErase.begin(),
+
+  for (SmallVectorImpl<OverDefinedPairTy>::iterator I = ToErase.begin(),
        E = ToErase.end(); I != E; ++I)
     Parent->OverDefinedCache.erase(*I);
   
@@ -444,8 +444,8 @@
     if (I->first == BB)
       ToErase.push_back(*I);
   }
-  
-  for (SmallVector<OverDefinedPairTy, 4>::iterator I = ToErase.begin(),
+
+  for (SmallVectorImpl<OverDefinedPairTy>::iterator I = ToErase.begin(),
        E = ToErase.end(); I != E; ++I)
     OverDefinedCache.erase(*I);