patch 9.0.1010: stray warnings for existing swap files

Problem:    Stray warnings for existing swap files.
Solution:   Wipe out the buffer until it has no name and no swap file.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1010,
 /**/
     1009,
 /**/