patch 8.2.5141: using "volatile int" in a signal handler might be wrong

Problem:    Using "volatile int" in a signal handler might be wrong.
Solution:   Use "volatile sig_atomic_t".
diff --git a/src/version.c b/src/version.c
index 5b5b405..9952284 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5141,
+/**/
     5140,
 /**/
     5139,