Fixes a typo which caused byte offset in debug info 
for ivars to be 0. Fixes pr8353.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116273 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index f3a3420..a07b43a 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -1125,7 +1125,7 @@
 
   unsigned FieldNo = 0;
   for (ObjCIvarDecl *Field = ID->all_declared_ivar_begin(); Field;
-       Field = Field->getNextIvar()) {
+       Field = Field->getNextIvar(), ++FieldNo) {
     llvm::DIType FieldTy = getOrCreateType(Field->getType(), Unit);
 
     llvm::StringRef FieldName = Field->getName();