--- csiz-underflow.patch	2015-11-11 19:29:05.558235371 +0100
+++ csiz-underflow.patch	2015-11-11 19:27:16.435349276 +0100
@@ -17,7 +17,7 @@
  
 -            if (G.pInfo->encrypted)
 +            if (G.pInfo->encrypted) {
-+                if (csiz_decrypted <= 12) {
++                if (csiz_decrypted < 12) {
 +                    /* handle the error now to prevent unsigned overflow */
 +                    Info(slide, 0x401, ((char *)slide,
 +                      LoadFarStringSmall(ErrUnzipNoFile),