reject multiple friend requests from one person

makes https://github.com/TheSpiritXIII/qTox/commit/

src/persistence/settings.cpp

@@ -327,7 +327,8 @@ void Settings::loadPersonal(Profile* profile)
     ps.beginGroup("Requests");
         unreadFriendRequests = ps.value("unread", 0).toUInt();
         size = ps.beginReadArray("Request");
-        friendLst.reserve(size);
+        friendRequests.clear();
+        friendRequests.reserve(size);
         for (int i = 0; i < size; i ++)
         {
             ps.setArrayIndex(i);
@@ -1533,16 +1534,23 @@ void Settings::setCircleExpanded(int id, bool expanded)
     circleLst[id].expanded = expanded;
 }
 
-void Settings::addFriendRequest(const QString &friendAddress, const QString &message)
+bool Settings::addFriendRequest(const QString &friendAddress, const QString &message)
 {
     QMutexLocker locker{&bigLock};
-    QPair<QString, QString> request(friendAddress, message);
 
-    if (friendRequests.indexOf(request) != -1)
-        return;
+    for (auto queued : friendRequests)
+    {
+       if (queued.first == friendAddress)
+       {
+           queued.second = message;
+           return false;
+       }
+    }
 
+    QPair<QString, QString> request(friendAddress, message);
     friendRequests.push_back(request);
     ++unreadFriendRequests;
+    return true;
 }
 
 unsigned int Settings::getUnreadFriendRequests() const

src/persistence/settings.h

@@ -275,7 +275,7 @@ public:
     bool getCircleExpanded(int id) const;
     void setCircleExpanded(int id, bool expanded);
 
-    void addFriendRequest(const QString &friendAddress, const QString &message);
+    bool addFriendRequest(const QString &friendAddress, const QString &message);
     unsigned int getUnreadFriendRequests() const;
     QPair<QString, QString> getFriendRequest(int index) const;
     int getFriendRequestSize() const;

src/widget/form/addfriendform.cpp

@@ -127,11 +127,15 @@ void AddFriendForm::setMode(Mode mode)
     tabWidget->setCurrentIndex(mode);
 }
 
-void AddFriendForm::addFriendRequest(const QString &friendAddress, const QString &message)
+bool AddFriendForm::addFriendRequest(const QString &friendAddress, const QString &message)
 {
-    addFriendRequestWidget(friendAddress, message);
-    Settings::getInstance().addFriendRequest(friendAddress, message);
-    onCurrentChanged(tabWidget->currentIndex());
+    if(Settings::getInstance().addFriendRequest(friendAddress, message))
+    {
+        addFriendRequestWidget(friendAddress, message);
+        onCurrentChanged(tabWidget->currentIndex());
+        return true;
+    }
+    return false;
 }
 
 void AddFriendForm::onUsernameSet(const QString& username)

src/widget/form/addfriendform.h

@@ -52,7 +52,7 @@ public:
     QString getMessage() const;
     void setMode(Mode mode);
 
-    void addFriendRequest(const QString& friendAddress, const QString& message);
+    bool addFriendRequest(const QString& friendAddress, const QString& message);
 
 signals:
     void friendRequested(const QString& friendAddress, const QString& message);

src/widget/widget.cpp

@@ -1280,9 +1280,11 @@ bool Widget::newMessageAlert(QWidget* currentWindow, bool isActive, bool sound,
 
 void Widget::onFriendRequestReceived(const QString& userId, const QString& message)
 {
-    addFriendForm->addFriendRequest(userId, message);
-    friendRequestsUpdate();
-    newMessageAlert(window(), isActiveWindow(), true, true);
+    if(addFriendForm->addFriendRequest(userId, message))
+    {
+        friendRequestsUpdate();
+        newMessageAlert(window(), isActiveWindow(), true, true);
+    }
 }
 
 void Widget::updateFriendActivity(Friend *frnd)