Add zlib version to GUI & stackdump

src/base/utils/misc.cpp

@@ -44,6 +44,7 @@
 #include <boost/version.hpp>
 #include <openssl/opensslv.h>
 #include <libtorrent/version.hpp>
+#include <zlib.h>
 
 #include <QCoreApplication>
 #include <QRegularExpression>
@@ -463,6 +464,13 @@ QString Utils::Misc::opensslVersionString()
     return version.split(' ', QString::SkipEmptyParts)[1];
 }
 
+QString Utils::Misc::zlibVersionString()
+{
+    // static initialization for usage in signal handler
+    static const QString version {ZLIB_VERSION};
+    return version;
+}
+
 #ifdef Q_OS_WIN
 QString Utils::Misc::windowsSystemPath()
 {