[tkreuzer] 70441: [SETUPAPI] Fix invalid use of wcslen with NULL pointer. Should fix crash in setupapi_winetest:install.

Author: tkreuzer
Date: Sun Dec 27 17:55:14 2015
New Revision: 70441

URL: http://svn.reactos.org/svn/reactos?rev=70441&view=rev
Log:
[SETUPAPI]
Fix invalid use of wcslen with NULL pointer. Should fix crash in setupapi_winetest:install.

Modified:
    trunk/reactos/dll/win32/setupapi/install.c

Modified: trunk/reactos/dll/win32/setupapi/install.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/setupapi/install....
==============================================================================
--- trunk/reactos/dll/win32/setupapi/install.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/setupapi/install.c	[iso-8859-1] Sun Dec 27 17:55:14 2015
@@ -1079,7 +1079,9 @@
             hr = IShellLinkW_QueryInterface(psl, &IID_IPersistFile, (LPVOID*)&ppf);
             if (SUCCEEDED(hr))
             {
-                Required = (MAX_PATH + wcslen(LinkSubDir) + 1 + wcslen(LinkName)) * sizeof(WCHAR);
+                Required = (MAX_PATH + 1 +
+                           ((LinkSubDir != NULL) ? wcslen(LinkSubDir) : 0) +
+                           ((LinkName != NULL) ? wcslen(LinkName) : 0)) * sizeof(WCHAR);
                 FullLinkName = MyMalloc(Required);
                 if (!FullLinkName)
                     hr = E_OUTOFMEMORY;
@@ -1812,7 +1814,7 @@

if (!GetLineText(hInf, ServiceSection, ServiceBinaryKey, &ServiceBinary))
     {
-        SetLastError( ERROR_BAD_SERVICE_INSTALLSECT );   
+        SetLastError( ERROR_BAD_SERVICE_INSTALLSECT );
         goto cleanup;
     }