Author: Aron Barath <aron-alpine@mailbox.org>

Code falsely assumes that new threads on a POSIX system has at least 2 MiB
of stack. This is true only for glibc, but not for musl. Also, POSIX
specification only defines the absolute minimum stack size, which is 16 KiB.

Interestingly, the code hacks this on Mac OS X in a non-portable way to 2 MiB.
See line 156 in sshmasterconnection.cpp

Current QT has a (let's say) portable way to set the stack size of the new
threads. I use QT's mechanism to set the stack size to the desired 2 MiB.
----
--- a/src/onmainwindow.cpp	2020-02-13 11:36:07.000000000 +0100
+++ b/src/onmainwindow.cpp	2022-09-13 10:12:45.268906497 +0200
@@ -2894,6 +2894,7 @@
     connect (con, SIGNAL(finishInteraction(SshMasterConnection*)),this, SLOT(slotSshInteractionFinish(SshMasterConnection*)));
     connect ( interDlg, SIGNAL(textEntered(QString)), con, SLOT(interactionTextEnter(QString)));
     connect ( interDlg, SIGNAL(interrupt()), con, SLOT(interactionInterruptSlot()));
+    con->setStackSize(2*1024*1024);
     con->start();
     return con;
 }