From 1112b1ba33e9a5e3c563e081bebe3a12962354ac Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Tue, 22 May 2018 20:06:21 +0200
Subject: terminal-unix: stop trying to read when terminal disappears

Avoids 100% CPU usage due to terminal code retrying read(). Seems like
this was "forgotten" (or there was somehow the assumption poll() would
not signal POLLIN anymore).

Fixes #5842.
---
 osdep/terminal-unix.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/osdep/terminal-unix.c b/osdep/terminal-unix.c
index 1e909522b7..954c13904f 100644
--- a/osdep/terminal-unix.c
+++ b/osdep/terminal-unix.c
@@ -395,8 +395,10 @@ static void *terminal_thread(void *ptr)
         polldev(fds, stdin_ok ? 2 : 1, -1);
         if (fds[0].revents)
             break;
-        if (fds[1].revents)
-            getch2(input_ctx);
+        if (fds[1].revents) {
+            if (!getch2(input_ctx))
+                break;
+        }
     }
     char c;
     bool quit = read(death_pipe[0], &c, 1) == 1 && c == 1;
-- 
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