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)

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    5012,
 /**/
     5011,
 /**/