documentation: remove confusing reference to properties.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183475 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index f51831c..d0dcc53 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -1981,9 +1981,9 @@
 /// ivars and property accessors.
 unsigned CGDebugInfo::Checksum(const ObjCInterfaceDecl
                                *ID) {
-  // The assumption is that the number of ivars and property accessors
-  // can only increase monotonically, so it is safe to just use the
-  // sum of these as a checksum.
+  // The assumption is that the number of ivars can only increase
+  // monotonically, so it is safe to just use their current number as
+  // a checksum.
   unsigned Sum = 0;
   for (const ObjCIvarDecl *Ivar = ID->all_declared_ivar_begin();
        Ivar != 0; Ivar = Ivar->getNextIvar())