Bug 1425826 - prevent null pointer dereference in BinASTParser::parseBlockStatementAux. r=jorendorff

MozReview-Commit-ID: FMIfHez97Yd

--HG--
extra : rebase_source : 523843d83a7b0795612d871b6f6001ec9a1e7d87

js/src/frontend/BinSource.cpp

@@ -335,7 +335,7 @@ BinASTParser::parseBlockStatementAux(const BinKind kind, const BinFields& fields
 
     // In case of absent optional fields, inject default values.
     if (!body)
-        body = factory_.newStatementList(tokenizer_->pos());
+        TRY_VAR(body, factory_.newStatementList(tokenizer_->pos()));
 
     MOZ_TRY_VAR(body, appendDirectivesToBody(body, directives));