patch 8.2.3759: quickfix buffer becomes hidden while still in a window

Problem:    Quickfix buffer becomes hidden while still in a window.
Solution:   Check if the closed window is the last window showing the quickfix
            buffer. (Yegappan Lakshmanan, closes #9303, closes #9300)
diff --git a/src/version.c b/src/version.c
index 6d58175..13b6a0c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3759,
+/**/
     3758,
 /**/
     3757,