Add some missing decont markers.

The MoarVM ops wrongly attempted to handle this before.

Author: jnthn

src/vm/moar/QAST/QASTOperationsMAST.nqp

@@ -2109,8 +2109,8 @@ QAST::MASTOperations.add_core_moarop_mapping('settypecheckmode', 'settypecheckmo
 QAST::MASTOperations.add_core_moarop_mapping('isinvokable', 'isinvokable');
 QAST::MASTOperations.add_core_moarop_mapping('setinvokespec', 'setinvokespec', 0);
 QAST::MASTOperations.add_core_moarop_mapping('setcontspec', 'setcontspec', 0);
-QAST::MASTOperations.add_core_moarop_mapping('assign', 'assign', 0);
-QAST::MASTOperations.add_core_moarop_mapping('assignunchecked', 'assignunchecked', 0);
+QAST::MASTOperations.add_core_moarop_mapping('assign', 'assign', 0, :decont(1));
+QAST::MASTOperations.add_core_moarop_mapping('assignunchecked', 'assignunchecked', 0, :decont(1));
 
 # defined - overridden by HLL, but by default same as .DEFINITE.
 QAST::MASTOperations.add_core_moarop_mapping('defined', 'isconcrete', :decont(0));