patch 8.0.0999: indenting raw C++ strings is wrong

Problem:    Indenting raw C++ strings is wrong.
Solution:   Add special handling of raw strings. (Christian Brabandt)
diff --git a/src/version.c b/src/version.c
index 766bd86..e62f6a1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    999,
+/**/
     998,
 /**/
     997,