patch 8.2.1842: crash when USE_FNAME_CASE is defined and using :browse

Problem:    Crash when USE_FNAME_CASE is defined and using :browse.
Solution:   Don't use read-only memory for ".". (Yegappan Lakshmanan,
            closes #7123)
diff --git a/src/version.c b/src/version.c
index 6b33631..e326111 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1842,
+/**/
     1841,
 /**/
     1840,