patch 8.0.1550: various small problems in source files

Problem:    Various small problems in source files.
Solution:   Fix the problems.
diff --git a/src/version.c b/src/version.c
index f5ffe20..048387b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -779,6 +779,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1550,
+/**/
     1549,
 /**/
     1548,