fix: fixed memleaks and predefinedfilterscombobox and abstractlogview #878

Job	Run time
SaveVersion	4s
Mac (macos, 11, 5.15.2, x64, macos-qt5, -DKLOGG_OSX_DEPLOYMENT_TARGET=10.14)	1s
Linux (oraclelinux, 8, x64, yum install -y --setopt tsflags=test /usr/local/klogg*.rpm, RPM, orac...	15m 5s
Mac (macos, 11, 6.5.1, qt5compat, x64, macos-qt6, -DKLOGG_OSX_DEPLOYMENT_TARGET=10.15)	1s
Linux (ubuntu_bionic, 18.04, x64, apt-get update && apt install --dry-run /usr/local/klogg*.deb, ...	11m 0s
Windows (windows, 2022, 5.15.2, x64, -x64, windows-x64-qt5)	14s
Linux (ubuntu_focal, 20.04, x64, apt-get update && apt install --dry-run /usr/local/klogg*.deb, D...	17m 12s
Linux (ubuntu_jammy, 22.04, x64, apt-get update && apt install --dry-run /usr/local/klogg*.deb, D...	13m 16s
Linux (ubuntu_appimage, 18.04, x64, appimage, AppImage, docker/ubuntu18.04_qt5.15, variar/klogg_u...	14m 31s
Windows (windows, 2022, 6.5.1, qt5compat, x64, -x64, windows-x64-qt6)	14s
Windows (windows, 2022, 5.15.2, x86, win32_msvc2019, windows-x86-qt5)	15s
	1h 11m 53s

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