patch 9.1.1176: wrong indent when expanding multiple lines

Problem:  wrong indentation of lastline when expanding multiple lines
Solution: Check OPENLINE_FORCE_INDENT flag in open_line() (glepnir)

closes: #16786

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1176,
 /**/
     1175,
 /**/