Fix stale references to getch()

src/input_common.cpp

@@ -221,7 +221,7 @@ maybe_t<char_event_t> input_event_queue_t::readch_timed() {
     }
     // We are not prepared to handle a signal immediately; we only want to know if we get input on
     // our fd before the timeout. Use pselect to block all signals; we will handle signals
-    // before the next call to getch().
+    // before the next call to readch().
     sigset_t sigs;
     sigfillset(&sigs);
 

tests/pexpects/torn_escapes.py

@@ -80,7 +80,7 @@ sendline(r"")
 expect_prompt()
 
 # As before but it comes after the ESC.
-# The signal will arrive while we are waiting in getch_timed().
+# The signal will arrive while we are waiting in readch_timed().
 send("abc\x1b")
 sleep(0.05)
 os.kill(sp.spawn.pid, signal.SIGUSR1)