Fixes a rewrite bug, rewriting nested property usage 
inside blocks. Fixes //rdar: //8608293.

llvm-svn: 118425
diff --git a/clang/lib/Rewrite/RewriteObjC.cpp b/clang/lib/Rewrite/RewriteObjC.cpp
index 5fff388..4e40b4e 100644
--- a/clang/lib/Rewrite/RewriteObjC.cpp
+++ b/clang/lib/Rewrite/RewriteObjC.cpp
@@ -5524,7 +5524,12 @@
     GetInnerBlockDeclRefExprs(BE->getBody(),
                               InnerBlockDeclRefs, InnerContexts);
     // Rewrite the block body in place.
+    Stmt *SaveCurrentBody = CurrentBody;
+    CurrentBody = BE->getBody();
+    PropParentMap = 0;
     RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
+    CurrentBody = SaveCurrentBody;
+    PropParentMap = 0;
     ImportedLocalExternalDecls.clear();
     // Now we snarf the rewritten text and stash it away for later use.
     std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());