patch 9.0.0825: cannot drag an entry in the tabpage line

Problem:    Cannot drag an entry in the tabpage line.
Solution:   Clear dragwin instead of got_click. (closes #11483,
            closes #11482)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    825,
 /**/
     824,
 /**/