patch 9.0.0042: missing change for filetype detection

Problem:    Missing change for filetype detection.
Solution:   Include change to detect guile from shebang line.
diff --git a/src/version.c b/src/version.c
index 809f05d..22908e2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    42,
+/**/
     41,
 /**/
     40,