Convert more counts to be zero based instead of -1 based, make them unsigned.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48429 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/ASTConsumers.cpp b/Driver/ASTConsumers.cpp
index dcbe679..0dc6692 100644
--- a/Driver/ASTConsumers.cpp
+++ b/Driver/ASTConsumers.cpp
@@ -247,7 +247,7 @@
   else
     Out << '\n';
   
-  if (OID->getNumInstanceVariables() > 0) {
+  if (OID->ivar_size() > 0) {
     Out << '{';
     for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
          E = OID->ivar_end(); I != E; ++I) {