Use SmallVectorImpl instead of SmallVector for iterators and references to avoid specifying the vector size unnecessarily.

llvm-svn: 185610
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 135af04..3f3d001 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1077,7 +1077,7 @@
 
     // Build the pipeline for this file.
     OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
-    for (llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases>::iterator
+    for (SmallVectorImpl<phases::ID>::iterator
            i = PL.begin(), e = PL.end(); i != e; ++i) {
       phases::ID Phase = *i;