Fix dynamic pickup-filter NPE

[Pablete1234]

Should fix the following NPE:

[20:54:27 WARN]: java.lang.NullPointerException: Cannot invoke "tc.oc.pgm.variables.Variable.getValue(tc.oc.pgm.filters.Filterable)" because "variable" is null
[20:54:27 WARN]:        at tc.oc.pgm.filters.matcher.match.VariableFilter.getValue(VariableFilter.java:55)
[20:54:27 WARN]:        at tc.oc.pgm.filters.matcher.match.VariableFilter.queryTyped(VariableFilter.java:51)
[20:54:27 WARN]:        at tc.oc.pgm.filters.matcher.match.VariableFilter$Generic.queryTyped(VariableFilter.java:75)
[20:54:27 WARN]:        at tc.oc.pgm.filters.matcher.WeakTypedFilter.query(WeakTypedFilter.java:21)
[20:54:27 WARN]:        at tc.oc.pgm.filters.operator.AllFilter.query(AllFilter.java:18)
[20:54:27 WARN]:        at tc.oc.pgm.filters.operator.AllFilter.query(AllFilter.java:18)
[20:54:27 WARN]:        at tc.oc.pgm.filters.operator.AllFilter.query(AllFilter.java:18)
[20:54:27 WARN]:        at tc.oc.pgm.flag.FlagDefinition.canPickup(FlagDefinition.java:192)
[20:54:27 WARN]:        at tc.oc.pgm.flag.Flag.<init>(Flag.java:123)
[20:54:27 WARN]:        at tc.oc.pgm.flag.FlagMatchModule.<init>(FlagMatchModule.java:42)
[20:54:27 WARN]:        at tc.oc.pgm.flag.FlagModule.createMatchModule(FlagModule.java:52)
[20:54:27 WARN]:        at tc.oc.pgm.flag.FlagModule.createMatchModule(FlagModule.java:25)
[20:54:27 WARN]:        at tc.oc.pgm.match.MatchImpl$ModuleLoader.createModule(MatchImpl.java:807)

[Pablete1234]

This does not actually solve the issue, will see how deep i want to go to fix this at a later time