Non-ASCII variables of `PROCEDURE DIVISION USING` cause compile erros

[yutaro-sakamoto]

Reproduction code

       IDENTIFICATION          DIVISION.
       PROGRAM-ID.             n.
       ENVIRONMENT             DIVISION.
       DATA                    DIVISION.
       WORKING-STORAGE         SECTION.
       LINKAGE                 SECTION.
       01 ローン PIC 9(09).
       PROCEDURE DIVISION USING ローン.
           DISPLAY ローン.

cobj n.cbl
./n.java:39: error: <identifier> expected
  public CobolResultSet execute (int 838d815b8393) {
                                    ^
./n.java:41: error: ')' expected
    this.f_838d815b8393.moveFrom(838d815b8393);
                                     ^
./n.java:41: error: not a statement
    this.f_838d815b8393.moveFrom(838d815b8393);
                                        ^
./n.java:41: error: ';' expected
    this.f_838d815b8393.moveFrom(838d815b8393);
                                             ^
4 errors

[yutaro-sakamoto]

See #325

[yutaro-sakamoto]

#501 resolved this issue