(print_node): Don't print blank line for null fields in a TREE_VEC.

From-SVN: r2133

gcc/print-tree.c

@@ -601,6 +601,7 @@ print_node (file, prefix, node, indent)
 	case TREE_VEC:
 	  len = TREE_VEC_LENGTH (node);
 	  for (i = 0; i < len; i++)
+	    if (TREE_VEC_ELT (node, i))
 	      {
 		char temp[10];
 		sprintf (temp, "elt %d", i);