Fix CVE-2021-34825 patch backport for 0.12.5

quassel.spec

@@ -65,6 +65,7 @@ Quassel client
 
 %prep
 %setup -q -n %{name}-%{version}
+%patch0 -p1
 
 %build
 mkdir build

quassel_0.12.5_CVE-2021-34825.patch

@@ -1,8 +1,7 @@
-diff --git a/src/core/sslserver.cpp b/src/core/sslserver.cpp
-index 9c3c7edc..1c1f05cd 100644
---- a/src/core/sslserver.cpp
-+++ b/src/core/sslserver.cpp
-@@ -49,6 +49,13 @@ SslServer::SslServer(QObject* parent)
+diff -ruN a/src/core/sslserver.cpp b/src/core/sslserver.cpp
+--- a/src/core/sslserver.cpp	2018-04-23 21:44:48.000000000 +0000
++++ b/src/core/sslserver.cpp	2021-06-22 04:27:39.596212479 +0000
+@@ -52,6 +52,16 @@
  
      // Initialize the certificates for first-time usage
      if (!loadCerts()) {
@@ -10,9 +9,12 @@ index 9c3c7edc..1c1f05cd 100644
 +        // do not proceed, throw an exception and quit. This prevents the core from falling
 +        // back to a plaintext-only core when they should be expecting SSL/TLS only.
 +        if (Quassel::isOptionSet("require-ssl")) {
-+            throw ExitException{EXIT_FAILURE, tr("--require-ssl is set, but no SSL certificate is available. Exiting.\n"
-+                                                 "Please see https://quassel-irc.org/faq/cert to learn how to enable SSL support.")};
++            quWarning()
++            << "--require-ssl is set, but no SSL certificate is available. "
++            << "Exiting.\nPlease see https://quassel-irc.org/faq/cert to learn"
++            << "how to enable SSL support.";
++            exit(EXIT_FAILURE);
 +        }
          if (!sslWarningShown) {
-             qWarning() << "SslServer: Unable to set certificate file\n"
-                        << "          Quassel Core will still work, but cannot provide SSL for client connections.\n"
+             quWarning()
+             << "SslServer: Unable to set certificate file\n"