Fix typo.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102005 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/ExprObjC.h b/include/clang/AST/ExprObjC.h
index 8a127c3..7aed6ca 100644
--- a/include/clang/AST/ExprObjC.h
+++ b/include/clang/AST/ExprObjC.h
@@ -402,7 +402,7 @@
                   Expr **Args, unsigned NumArgs,
                   SourceLocation RBracLoc);
 
-  /// \brief Retrieve the pointer value of the ,essage receiver.
+  /// \brief Retrieve the pointer value of the ,message receiver.
   void *getReceiverPointer() const {
     return *const_cast<void **>(
                              reinterpret_cast<const void * const*>(this + 1));