patch 8.1.1388: errors when calling prop_remove() for an unloaded buffer
Problem: Errors when calling prop_remove() for an unloaded buffer.
Solution: Bail out when the buffer is not loaded. Add a few more tests for
failing when the buffer number is invalid.
diff --git a/src/version.c b/src/version.c
index ac1c67a..81b7486 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 1388,
+/**/
1387,
/**/
1386,