Remove trailing whitespace. NFC ®

llvm-svn: 227105
diff --git a/llvm/lib/Support/YAMLTraits.cpp b/llvm/lib/Support/YAMLTraits.cpp
index fc23f31..43a0e10 100644
--- a/llvm/lib/Support/YAMLTraits.cpp
+++ b/llvm/lib/Support/YAMLTraits.cpp
@@ -683,7 +683,7 @@
   Val = Scalar;
   return StringRef();
 }
- 
+
 void ScalarTraits<std::string>::output(const std::string &Val, void *,
                                      raw_ostream &Out) {
   Out << Val;