Fix infinite loop in for ... in code generation.

- Patch via Thomas Clement, thanks!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55804 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGObjC.cpp

@@ -435,7 +435,7 @@ void CodeGenFunction::EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S)
   llvm::BasicBlock *FetchMore = llvm::BasicBlock::Create("fetchmore");
   
   llvm::Value *IsLess = Builder.CreateICmpULT(Counter, Limit, "isless");
-  Builder.CreateCondBr(IsLess, LoopStart, FetchMore);
+  Builder.CreateCondBr(IsLess, LoopBody, FetchMore);
 
   // Fetch more elements.
   EmitBlock(FetchMore);