Fix the windows build.

Sorry for the noise.

llvm-svn: 215249
diff --git a/llvm/lib/Support/Path.cpp b/llvm/lib/Support/Path.cpp
index bc6543a..4d17921 100644
--- a/llvm/lib/Support/Path.cpp
+++ b/llvm/lib/Support/Path.cpp
@@ -542,7 +542,7 @@
 
 void native(SmallVectorImpl<char> &Path) {
 #ifdef LLVM_ON_WIN32
-  std::replace(path.begin(), path.end(), '/', '\\');
+  std::replace(Path.begin(), Path.end(), '/', '\\');
 #else
   for (auto PI = Path.begin(), PE = Path.end(); PI < PE; ++PI) {
     if (*PI == '\\') {