vim-patch:7.4.1137

Problem:    Illegal memory access when using :copen and :cclose.
Solution:   Avoid that curbuf is invalid. (suggestion by Justin M. Keyes)
            Add a test.

62ef797496

src/nvim/version.c

@@ -69,6 +69,10 @@ static char *features[] = {
 
 // clang-format off
 static int included_patches[] = {
+  1137,
+
+
+
   1081,