[Bug 46691] New: comctl32/tests/propsheet.c shows uninitalized memory use

https://bugs.winehq.org/show_bug.cgi?id=46691

Bug ID: 46691
           Summary: comctl32/tests/propsheet.c shows uninitalized memory
                    use
           Product: Wine
           Version: 4.2
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, source, testcase, valgrind
          Severity: normal
          Priority: P2
         Component: comctl32
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
      Distribution: Gentoo

../../../tools/runtest -q -P wine -T ../../.. -M comctl32.dll -p
comctl32_test.exe.so propsheet && touch propsheet.ok
==30493== Syscall param write(buf) points to uninitialised byte(s)
==30493==    at 0x4253C7F: write (write.c:27)
==30493==    by 0x7BC75AAB: send_request (server.c:213)
==30493==    by 0x7BC767F0: server_call_unlocked (server.c:288)
==30493==    by 0x7BC76845: wine_server_call (server.c:321)
==30493==    by 0x4FA5FFD: PostQuitMessage (message.c:3762)
==30493==    by 0x5975F8E: do_loop (propsheet.c:2781)
==30493==    by 0x5976031: PROPSHEET_PropertySheet (propsheet.c:2815)
==30493==    by 0x5976612: PropertySheetA (propsheet.c:2865)
==30493==    by 0x4AE4E8F: test_bad_control_class (propsheet.c:1167)
==30493==    by 0x4AE82D7: func_propsheet (propsheet.c:1208)
==30493==    by 0x4B2C64C: run_test (test.h:617)
==30493==    by 0x4B2D08A: main (test.h:701)
==30493==  Address 0x4c6fb58 is on thread 1's stack
==30493==  in frame #4, created by PostQuitMessage (message.c:3758)
==30493==  Uninitialised value was created by a stack allocation
==30493==    at 0x5975EC4: do_loop (propsheet.c:2762)
==30493==