patch 8.1.0206: duplicate test function name

Problem:    Duplicate test function name.
Solution:   Rename both functions.
diff --git a/src/version.c b/src/version.c
index 23fea92..36e2fcb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -794,6 +794,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    206,
+/**/
     205,
 /**/
     204,