[mjansen] 74995: [SHELL32] Don't try to follow a null pointer inside CFSDropTarget, this fixes a crash in shell32:CFSFolder

Author: mjansen
Date: Sun Jun 11 08:38:16 2017
New Revision: 74995

URL: http://svn.reactos.org/svn/reactos?rev=74995&view=rev
Log:
[SHELL32] Don't try to follow a null pointer inside CFSDropTarget, this fixes a crash in shell32:CFSFolder

Modified:
    trunk/reactos/dll/win32/shell32/droptargets/CFSDropTarget.cpp

Modified: trunk/reactos/dll/win32/shell32/droptargets/CFSDropTarget.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/shell32/droptarge...
==============================================================================
--- trunk/reactos/dll/win32/shell32/droptargets/CFSDropTarget.cpp	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/shell32/droptargets/CFSDropTarget.cpp	[iso-8859-1] Sun Jun 11 08:38:16 2017
@@ -192,6 +192,9 @@

HRESULT WINAPI CFSDropTarget::Initialize(LPWSTR PathTarget)
 {
+    if (!PathTarget)
+        return E_UNEXPECTED;
+
     cfShellIDList = RegisterClipboardFormatW(CFSTR_SHELLIDLIST);
     if (!cfShellIDList)
         return E_FAIL;
@@ -199,6 +202,7 @@
     sPathTarget = (WCHAR *)SHAlloc((wcslen(PathTarget) + 1) * sizeof(WCHAR));
     if (!sPathTarget)
         return E_OUTOFMEMORY;
+
     wcscpy(sPathTarget, PathTarget);

return S_OK;