Include resume folder path in exception message

The message in RuntimeError exception will be displayed to the users and
users would be clueless if we don't show the path.

src/base/bittorrent/session.cpp

@@ -3961,11 +3961,13 @@ void Session::initResumeFolder()
     if (resumeFolderDir.exists() || resumeFolderDir.mkpath(resumeFolderDir.absolutePath())) {
         m_resumeFolderLock->setFileName(resumeFolderDir.absoluteFilePath("session.lock"));
         if (!m_resumeFolderLock->open(QFile::WriteOnly)) {
-            throw RuntimeError {tr("Cannot write to torrent resume folder.")};
+            throw RuntimeError {tr("Cannot write to torrent resume folder: \"%1\"")
+                .arg(Utils::Fs::toNativePath(m_resumeFolderPath))};
         }
     }
     else {
-        throw RuntimeError {tr("Cannot create torrent resume folder.")};
+        throw RuntimeError {tr("Cannot create torrent resume folder: \"%1\"")
+            .arg(Utils::Fs::toNativePath(m_resumeFolderPath))};
     }
 }