setupapi: Always initialize output parameter to avoid crash in buggy applications.

dlls/setupapi/devinst.c

@@ -2821,6 +2821,8 @@ BOOL WINAPI SetupDiEnumDeviceInterfaces(
         SetLastError(ERROR_INVALID_PARAMETER);
         return FALSE;
     }
+    /* In case application fails to check return value, clear output */
+    memset(DeviceInterfaceData, 0, sizeof(*DeviceInterfaceData));
     if (DeviceInfoData)
     {
         struct DeviceInfo *devInfo =