[Bug 36190] New: comdlg32/itemdlg shows a ton of valgrind warnings

https://bugs.winehq.org/show_bug.cgi?id=36190

Bug ID: 36190
           Summary: comdlg32/itemdlg shows a ton of valgrind warnings
           Product: Wine
           Version: 1.3.13
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, source, testcase
          Severity: minor
          Priority: P2
         Component: comdlg32
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]

==16983== Conditional jump or move depends on uninitialised value(s)
==16983==    at 0x5E694E7: ctrl_container_resize (itemdlg.c:848)
==16983==    by 0x5E6A509: update_layout (itemdlg.c:1224)
==16983==    by 0x5E6D117: IFileDialog2_fnSetFileNameLabel (itemdlg.c:1972)
==16983==    by 0x5E6DE2A: IFileOpenDialog_fnSetFileNameLabel
(shobjidl.h:13997)
==16983==    by 0x4CB447B: test_basics (shobjidl.h:15138)
==16983==    by 0x4CBE457: func_itemdlg (itemdlg.c:1932)
==16983==    by 0x4CC17B5: run_test (test.h:584)
==16983==    by 0x4CC1BA4: main (test.h:654)
==16983==  Uninitialised value was created by a stack allocation
==16983==    at 0x5E6A001: update_layout (itemdlg.c:1102)
==16983==

eventually..
==16983== More than 100 errors detected.  Subsequent errors
==16983== will still be recorded, but in less detail than before.