Fix infinit loop if component isn't found.

Shell's CTOR will fail if Okular component isn't found, leading
to i never being incremented.

shell/okular_main.cpp

@@ -135,6 +135,11 @@ Status main(const QStringList &paths, const QString &serializedOptions)
     }
 
     Shell* shell = new Shell( serializedOptions );
+    if ( !shell->isValid() )
+    {
+        return Error;
+    }
+
     shell->show();
     for ( int i = 0; i < paths.count(); )
     {
@@ -147,6 +152,10 @@ Status main(const QStringList &paths, const QString &serializedOptions)
         else
         {
             shell = new Shell( serializedOptions );
+            if ( !shell->isValid() )
+            {
+                return Error;
+            }
             shell->show();
         }
     }

shell/shell.cpp

@@ -64,6 +64,7 @@ Shell::Shell( const QString &serializedOptions )
 #ifdef KActivities_FOUND
     , m_activityResource(0)
 #endif
+    , m_isValid(true)
 {
   setObjectName( QLatin1String( "okular::Shell" ) );
   setContextMenuPolicy( Qt::NoContextMenu );
@@ -79,6 +80,7 @@ Shell::Shell( const QString &serializedOptions )
   {
     // if we couldn't find our Part, we exit since the Shell by
     // itself can't do anything useful
+    m_isValid = false;
     KMessageBox::error(this, i18n("Unable to find the Okular component."));
     return;
   }
@@ -130,10 +132,16 @@ Shell::Shell( const QString &serializedOptions )
   }
   else
   {
+    m_isValid = false;
     KMessageBox::error(this, i18n("Unable to find the Okular component."));
   }
 }
 
+bool Shell::isValid() const
+{
+    return m_isValid;
+}
+
 void Shell::showOpenRecentMenu()
 {
     m_recent->menu()->popup(QCursor::pos());

shell/shell.h

@@ -60,6 +60,12 @@ public:
   virtual ~Shell();
 
   QSize sizeHint() const;
+
+  /**
+   * Returns false if Okular component wasn't found
+   **/
+  bool isValid() const;
+
 public slots:
   void slotQuit();
   
@@ -156,6 +162,7 @@ private:
 #ifdef KActivities_FOUND
   KActivities::ResourceInstance* m_activityResource;
 #endif
+  bool m_isValid;
 };
 
 #endif