fix the type of wchar_t for windows, PR4417


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74083 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 1d69e4e..9910e28 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -930,7 +930,7 @@
   WindowsX86_32TargetInfo(const std::string& triple)
     : X86_32TargetInfo(triple) {
     TLSSupported = false;
-    WCharType = SignedShort;
+    WCharType = UnsignedShort;
     WCharWidth = WCharAlign = 16;
     DoubleAlign = LongLongAlign = 64;
     DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"