[turbofan] Connect loops to end via Terminate during graph building.

test/unittests/compiler/common-operator-unittest.cc

Index: test/unittests/compiler/common-operator-unittest.cc
diff --git a/test/unittests/compiler/common-operator-unittest.cc b/test/unittests/compiler/common-operator-unittest.cc
index 7320d91434452b8ab7b116873e88f2cfa0bb86e3..d2f816beb7cecfe6bfab7f2e24e14f4cab181e3c 100644
--- a/test/unittests/compiler/common-operator-unittest.cc
+++ b/test/unittests/compiler/common-operator-unittest.cc
@@ -55,7 +55,7 @@ const SharedOperator kSharedOperators[] = {
     SHARED(IfException, Operator::kKontrol, 0, 0, 1, 1, 0, 1),
     SHARED(Throw, Operator::kKontrol, 1, 1, 1, 0, 0, 1),
     SHARED(Return, Operator::kNoThrow, 1, 1, 1, 0, 0, 1),
-    SHARED(Terminate, Operator::kNoThrow, 0, 1, 1, 0, 0, 1)
+    SHARED(Terminate, Operator::kKontrol, 0, 1, 1, 0, 0, 1)
 #undef SHARED
 };