Use correct finish call on normal termination.

I went the wrong way with my last commit. At normal program termination,
remove the abnormal termination handler and then manually make the right
exit call.

kdesrc-build

@@ -7644,6 +7644,8 @@ eval
     $color = 'r[' if $result;
 
     info "${color}Script finished processing at g[$time]" unless pretending;
+
+    @atexit_subs = (); # Clear exit handlers
     finish($ctx, $result);
 
     # }}}