patch 9.1.0879: source is not consistently formatted

Problem:  source is not consistently formatted
Solution: reformat sign.c and sound.c
          (Luca Saccarola)

closes: #16019

Signed-off-by: Luca Saccarola <github.e41mv@aleeas.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 6b263ea..0ffb001 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    879,
+/**/
     878,
 /**/
     877,