kernel32: Fix handling of NULL argument in SetDllDirectoryA().

Signed-off-by: Alexandre Julliard <julliard@winehq.org>

kernel32: Fix handling of NULL argument in SetDllDirectoryA().
c827e3f6 · Alexandre Julliard · a07960b9 · c827e3f6
Commit c827e3f6 authored Feb 05, 2019 by Alexandre Julliard
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module.c dlls/kernel32/module.c +2 -2

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--- a/dlls/kernel32/module.c
+++ b/dlls/kernel32/module.c
@@ -129,10 +129,10 @@ DWORD WINAPI GetDllDirectoryW( DWORD buf_len, LPWSTR buffer )
 */
 BOOL WINAPI SetDllDirectoryA( LPCSTR dir )
 {
-    WCHAR *dirW;
+    WCHAR *dirW = NULL;
    BOOL ret;

-    if (!(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
+    if (dir && !(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
    ret = SetDllDirectoryW( dirW );
    HeapFree( GetProcessHeap(), 0, dirW );
    return ret;