Coverage mapping: fix mapping for objective-c for statement

llvm-svn: 216082
diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index 4c5f375..86e2be8 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -836,6 +836,7 @@
     // Counter tracks the body of the loop.
     RegionMapper Cnt(this, S);
     BreakContinueStack.push_back(BreakContinue());
+    Cnt.beginRegion();
     VisitSubStmtRBraceState(S->getBody());
     BreakContinue BC = BreakContinueStack.pop_back_val();
     Cnt.adjustForControlFlow();