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-rw-r--r--js/src/frontend/FoldConstants.cpp7
1 files changed, 4 insertions, 3 deletions
diff --git a/js/src/frontend/FoldConstants.cpp b/js/src/frontend/FoldConstants.cpp
index 689fa02b4..fcda44a84 100644
--- a/js/src/frontend/FoldConstants.cpp
+++ b/js/src/frontend/FoldConstants.cpp
@@ -1259,9 +1259,10 @@ FoldCatch(ExclusiveContext* cx, ParseNode* node, Parser<FullParseHandler>& parse
MOZ_ASSERT(node->isKind(PNK_CATCH));
MOZ_ASSERT(node->isArity(PN_TERNARY));
- ParseNode*& declPattern = node->pn_kid1;
- if (!Fold(cx, &declPattern, parser, inGenexpLambda))
- return false;
+ if (ParseNode*& declPattern = node->pn_kid1) {
+ if (!Fold(cx, &declPattern, parser, inGenexpLambda))
+ return false;
+ }
if (ParseNode*& cond = node->pn_kid2) {
if (!FoldCondition(cx, &cond, parser, inGenexpLambda))