patch 8.2.2112: running tests may leave some files behind

Problem:    Running tests may leave some files behind.
Solution:   Delete the right files.  Fix a few typos. (Dominique Pellé,
            closes #7436
diff --git a/src/version.c b/src/version.c
index 07dc6a2..f441581 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2112,
+/**/
     2111,
 /**/
     2110,