[YAMLParser] Fix a typo: iff -> if. NFC.

diff --git a/llvm/include/llvm/Support/YAMLParser.h b/llvm/include/llvm/Support/YAMLParser.h
index 53009d7..44daf78 100644 (file)
--- a/llvm/include/llvm/Support/YAMLParser.h
+++ b/llvm/include/llvm/Support/YAMLParser.h
@@ -222,7 +222,7 @@ public:
 
   /// Gets the value of this node as a StringRef.
   ///
-  /// \param Storage is used to store the content of the returned StringRef iff
+  /// \param Storage is used to store the content of the returned StringRef if
   ///        it requires any modification from how it appeared in the source.
   ///        This happens with escaped characters and multi-line literals.
   StringRef getValue(SmallVectorImpl<char> &Storage) const;