temporarily disables `reduce_vars` (#1517)

... as we investigate #1516

diff --git a/lib/compress.js b/lib/compress.js
index 24ca105..294cb61 100644 (file)
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -70,7 +70,7 @@ function Compressor(options, false_by_default) {
         if_return     : !false_by_default,
         join_vars     : !false_by_default,
         collapse_vars : !false_by_default,
-        reduce_vars   : !false_by_default,
+        reduce_vars   : false,
         cascade       : !false_by_default,
         side_effects  : !false_by_default,
         pure_getters  : false,