win32u: Avoid accessing NULL key name string pointer.

ca02df5c · Rémi Bernon · Alexandre Julliard · 7c2ea163 · ca02df5c
Commit ca02df5c authored Aug 30, 2023 by Rémi Bernon Committed by Alexandre Julliard Nov 30, 2023
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input.c dlls/win32u/input.c +1 -1

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--- a/dlls/win32u/input.c
+++ b/dlls/win32u/input.c
@@ -1151,7 +1151,7 @@ INT WINAPI NtUserGetKeyNameText( LONG lparam, WCHAR *buffer, INT size )
    else key_name = kbd_tables->pKeyNamesExt;
    while (key_name->vsc && key_name->vsc != (BYTE)code) key_name++;

-    if (key_name->vsc == (BYTE)code)
+    if (key_name->vsc == (BYTE)code && key_name->pwsz)
    {
        len = min( size - 1, wcslen( key_name->pwsz ) );
        memcpy( buffer, key_name->pwsz, len * sizeof(WCHAR) );