patch 8.2.0175: crash when removing list element in map()

Problem:    Crash when removing list element in map().
Solution:   Lock the list. (closes #2652)
diff --git a/src/version.c b/src/version.c
index df1fe0d..0306e47 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    175,
+/**/
     174,
 /**/
     173,