Switch comments about 'macro instantiation' to 'macro expansion' in
ARCMigrate.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135223 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ARCMigrate/TransformActions.cpp b/lib/ARCMigrate/TransformActions.cpp
index 2e015da..c99940b 100644
--- a/lib/ARCMigrate/TransformActions.cpp
+++ b/lib/ARCMigrate/TransformActions.cpp
@@ -173,7 +173,7 @@
 
   /// \brief Computes the source location just past the end of the token at
   /// the given source location. If the location points at a macro, the whole
-  /// macro instantiation is skipped.
+  /// macro expansion is skipped.
   static SourceLocation getLocForEndOfToken(SourceLocation loc,
                                             SourceManager &SM,Preprocessor &PP);
 };
@@ -586,7 +586,7 @@
 
 /// \brief Computes the source location just past the end of the token at
 /// the given source location. If the location points at a macro, the whole
-/// macro instantiation is skipped.
+/// macro expansion is skipped.
 SourceLocation TransformActionsImpl::getLocForEndOfToken(SourceLocation loc,
                                                          SourceManager &SM,
                                                          Preprocessor &PP) {