don't crash when destroying codec list

this was uncovered by rittk's don't-detach patch.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/corelib/codecs/qtextcodec.cpp b/src/corelib/codecs/qtextcodec.cpp
index 0a37f27f23..263b5f9921 100644
--- a/src/corelib/codecs/qtextcodec.cpp
+++ b/src/corelib/codecs/qtextcodec.cpp
@@ -213,12 +213,13 @@ QTextCodecCleanup::~QTextCodecCleanup()
     destroying_is_ok = true;
 #endif
 
-    for (QList<QTextCodec *>::const_iterator it = all->constBegin()
-            ; it != all->constEnd(); ++it) {
+    QList<QTextCodec *> *myAll = all;
+    all = 0; // Otherwise the d'tor destroys the iterator
+    for (QList<QTextCodec *>::const_iterator it = myAll->constBegin()
+            ; it != myAll->constEnd(); ++it) {
         delete *it;
     }
-    delete all;
-    all = 0;
+    delete myAll;
     localeMapper = 0;
 
 #ifdef Q_DEBUG_TEXTCODEC