ruby: fix ql alert

Author: yoff

ruby/ql/src/queries/variables/UninitializedLocal.ql

@@ -82,7 +82,7 @@ class RelevantLocalVariableReadAccess extends LocalVariableReadAccess {
     not exists(ConditionalExpr c | factor(c.getCondition(), this.getVariable().getAnAccess()) |
       this = c.getBranch(true).getAChild*()
     ) and
-    not exists(ConditionalLoop l | loopProtects(l, this))
+    not loopProtects(_, this)
   }
 }