patch 8.2.5012: cannot select one character inside ()

Problem:    Cannot select one character inside ().
Solution:   Do not try to extend the area if it is empty. (closes #10472,
            closes #6616)
diff --git a/src/version.c b/src/version.c
index 5ea047a..dea37d6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5012,
+/**/
     5011,
 /**/
     5010,