Support/PathV2: Fix namespace qualifier in make_absolute(), for Win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151685 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp
index ce97b7f..786e1a1 100644
--- a/lib/Support/PathV2.cpp
+++ b/lib/Support/PathV2.cpp
@@ -602,7 +602,7 @@
 
   bool rootDirectory = path::has_root_directory(p),
 #ifdef LLVM_ON_WIN32
-       rootName = has_root_name(p);
+       rootName = path::has_root_name(p);
 #else
        rootName = true;
 #endif