fix corner case in `ie8` & `reduce_vars` (#3706)

fixes #3703

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/compress.js b/lib/compress.js
index 32d0b67d..b190ef9c 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -6964,9 +6964,9 @@ merge(Compressor.prototype, {
                             var fn = node.fixed_value();
                             if (!(fn instanceof AST_Lambda)) return;
                             if (!fn.name) return;
-                            var fn_def = fn.name.definition();
-                            if (fn_def.scope !== fn.name.scope) return;
-                            if (fixed.variables.get(fn.name.name) !== fn_def) return;
+                            if (fn.name.definition() !== def) return;
+                            if (def.scope !== fn.name.scope) return;
+                            if (fixed.variables.get(fn.name.name) !== def) return;
                             fn.name = fn.name.clone();
                             var value_def = value.variables.get(fn.name.name) || value.def_function(fn.name);
                             node.thedef = value_def;