[perl #61544] Arrays not properly created when declared in list syntax

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# New Ticket Created by  Cory Spencer 
# Please include the string:  [perl #61544]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=61544 >



When declaring one or more array variables in list syntax:

   my (@a, @b);

they are not properly initialized and are left as Undef objects. 
Subsequence array operations on the variable results in an error:

   @a.push(2);

   Method 'push' not found for invocant of class 'Undef'
   current instr.: '_block14' pc 85 (EVAL_15:47)
   called from Sub '!UNIT_START' pc 15711 (src/builtins/guts.pir:327)
   called from Sub 'parrot;PCT;HLLCompiler;eval' pc 892
     (src/PCT/HLLCompiler.pir:508)