Yet another ivar setting.

src/IDE.js

@@ -2323,7 +2323,7 @@ messageSends: ["css:put:", "asJQuery"]
 $globals.TabManager);
 
 
-$core.setInstanceVariables($globals.TabManager.a$cls, ["current"]);
+$core.setSlots($globals.TabManager.a$cls, ["current"]);
 $core.addMethod(
 $core.method({
 selector: "current",
@@ -7575,7 +7575,7 @@ messageSends: ["ifNil:", "open", "val:", "asJQuery", ",", "val", "asString"]
 $globals.IDETranscript);
 
 
-$core.setInstanceVariables($globals.IDETranscript.a$cls, ["current"]);
+$core.setSlots($globals.IDETranscript.a$cls, ["current"]);
 $core.addMethod(
 $core.method({
 selector: "current",