[graphics/kdegraphics-mobipocket/release/26.08] lib: DocumentPrivate::init: return early if dec is not valid

Git commit cb788b08a9bdc98c3e9807a14cf647e281c4fb14 by Albert Astals Cid.
Committed on 31/07/2026 at 15:13.
Pushed by aacid into branch 'release/26.08'.

DocumentPrivate::init: return early if dec is not valid

(cherry picked from commit c426eb3202c696518496b6a558a62e4a0c4fa75b)

M  +1    -1    lib/mobipocket.cpp

https://invent.kde.org/graphics/kdegraphics-mobipocket/-/commit/cb788b08a9bdc98c3e9807a14cf647e281c4fb14

diff --git a/lib/mobipocket.cpp b/lib/mobipocket.cpp
index 7901411..0927995 100644
--- a/lib/mobipocket.cpp
+++ b/lib/mobipocket.cpp
@@ -115,7 +115,7 @@ void DocumentPrivate::init()
     dec = Decompressor::create(mhead[1], getHuffRecords(pdb));
     if ((int)mhead[12] != 0 || (int)mhead[13] != 0)
         drm = true;
-    if (!dec)
+    if (!dec || !dec->isValid())
         return;
 
     ntextrecords = qFromBigEndian<quint16>(mhead.constData() + 8);