[NFC] Make a check in GuardWidening more obvious

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353038 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GuardWidening.cpp b/lib/Transforms/Scalar/GuardWidening.cpp
index 3359770..d2cde52 100644
--- a/lib/Transforms/Scalar/GuardWidening.cpp
+++ b/lib/Transforms/Scalar/GuardWidening.cpp
@@ -375,7 +375,7 @@
 
     assert((i == (e - 1)) == (Instr->getParent() == CurBB) && "Bad DFS?");
 
-    if (Instr->getParent() == CurBB && CurBB->getTerminator() != Instr) {
+    if (Instr->getParent() == CurBB && isGuard(Instr)) {
       // Corner case: make sure we're only looking at guards strictly dominating
       // GuardInst when visiting GuardInst->getParent().
       auto NewEnd = std::find(I, E, Instr);