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[SHLWAPI] Follow-up of #2430

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Add a NULL check in SHLockSharedEx function. CORE-13950
This commit is contained in:
Katayama Hirofumi MZ 2020-03-11 07:36:07 +09:00
parent 23f6b36174
commit 5a440b2d90
1 changed files with 2 additions and 0 deletions
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2
dll/win32/shlwapi/ordinal.c
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@ -259,6 +259,8 @@ PVOID WINAPI SHLockShared(HANDLE hShared, DWORD dwProcId)
/* Get handle to shared memory for current process */ /* Get handle to shared memory for current process */
hDup = SHMapHandle(hShared, dwProcId, GetCurrentProcessId(), FILE_MAP_ALL_ACCESS, 0); hDup = SHMapHandle(hShared, dwProcId, GetCurrentProcessId(), FILE_MAP_ALL_ACCESS, 0);
if (hDup == NULL)
return NULL;
/* Get View */ /* Get View */
pMapped = MapViewOfFile(hDup, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0); pMapped = MapViewOfFile(hDup, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);