terminal: Handle loss of focus in event loop.

While in a terminal and insert mode, if an event caused loss of focus,
nvim would stay in the terminal event loop causing an inconsistent view
of internal state and/or segfault.

Remove the "term" argument from terminal_enter() as it only makes sense
to call it with curbuf->terminal. Terminate the loop when switched to a
different buffer.

fixes #2301

1 files changed, 1 insertions, 1 deletions

diff --git a/src/nvim/edit.c b/src/nvim/edit.c
index 8b2ac1943f..c60d987ddd 100644
--- a/src/nvim/edit.c
+++ b/src/nvim/edit.c
@@ -246,7 +246,7 @@ edit (
 )
 {
   if (curbuf->terminal) {
-    terminal_enter(curbuf->terminal, true);
+    terminal_enter(true);
     return false;
   }