Fix list() expression emittance for PHP 5.6 and PHP 7.0

Author: thekid

src/main/php/lang/ast/emit/PHP56.class.php

@@ -111,7 +111,10 @@ protected function emitConst($node) {
   protected function emitAssignment($node) {
     if ('array' === $node->value[0]->arity) {
       $this->out->write('list(');
-      $this->arguments($node->value[0]->value);
+      foreach ($node->value[0]->value as $expr) {
+        $this->emit($expr[1]);
+        $this->out->write(',');
+      }
       $this->out->write(')');
       $this->out->write($node->symbol->id);
       $this->emit($node->value[1]);

src/main/php/lang/ast/emit/PHP70.class.php

@@ -34,7 +34,10 @@ protected function catches($catch) {
   protected function emitAssignment($node) {
     if ('array' === $node->value[0]->arity) {
       $this->out->write('list(');
-      $this->arguments($node->value[0]->value);
+      foreach ($node->value[0]->value as $expr) {
+        $this->emit($expr[1]);
+        $this->out->write(',');
+      }
       $this->out->write(')');
       $this->out->write($node->symbol->id);
       $this->emit($node->value[1]);