[Bug 26121] New: msacm32/msacm test shows an invalid read under valgrind

http://bugs.winehq.org/show_bug.cgi?id=26121

Summary: msacm32/msacm test shows an invalid read under
                    valgrind
           Product: Wine
           Version: 1.3.13
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Keywords: download, source, testcase
          Severity: minor
          Priority: P2
         Component: msacm32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Invalid read of size 4
    at  MSACM_GetObj (internal.c:812)
    by  MSACM_GetDriver (internal.c:830)
    by  acmDriverClose (driver.c:195)
    by  DriverEnumProc (msacm.c:374)
    by  acmDriverEnum (driver.c:345)
    by  msacm_tests (msacm.c:485)
    by  func_msacm (msacm.c:493)
    by  run_test (test.h:556)
    by  main (test.h:624)
  Address 0x7f240a00 is 0 bytes inside a block of size 20 free'd
    at  notify_free (heap.c:262)
    by  RtlFreeHeap (heap.c:1747)
    by  acmDriverClose (driver.c:218)
    by  DriverEnumProc (msacm.c:368)
    by  acmDriverEnum (driver.c:345)
    by  msacm_tests (msacm.c:485)
    by  func_msacm (msacm.c:493)
    by  run_test (test.h:556)
    by  main (test.h:624)

Expected, since we're doing:
            /* try valid parameters */
            rc = acmDriverClose(had, 0);
            ok(rc == MMSYSERR_NOERROR,
               "acmDriverClose(): rc = %08x, should be %08x\n",
               rc, MMSYSERR_NOERROR);

/* try closing again */
            rc = acmDriverClose(had, 0);
            ok(rc == MMSYSERR_INVALHANDLE,
               "acmDriverClose(): rc = %08x, should be %08x\n",
               rc, MMSYSERR_INVALHANDLE);

Placeholder bug.