rc make: fix make-jump if selection includes trailing newline

Given

    make[1]: Entering directory '/home/johannes/git/kakoune/src'
    main.cc:66:9: error: expected ‘}’ before ‘asdf’

If I select the whole second line, including the newline, make-jump
fails with an enigmatic "no such file or directory main.cc".  This is
because `gl` does not move the cursor away from the newline. Fix it.

This appears to have regressed in 80d661e6a (rc/: More consistent
uses of regex syntax, 2017-09-29).

rc/tools/make.kak

@@ -56,7 +56,7 @@ define-command -hidden make-jump %{
         try %{
             execute-keys gl<a-?> "Entering directory" <ret><a-:>
             # Try to parse the error into capture groups, failing on absolute paths
-            execute-keys s "Entering directory [`']([^']+)'.*\n([^:\n/][^:\n]*):(\d+):(?:(\d+):)?([^\n]+)\z" <ret>l
+            execute-keys s "Entering directory [`']([^']+)'.*\n([^:\n/][^:\n]*):(\d+):(?:(\d+):)?([^\n]+)\n?\z" <ret>l
             set-option buffer make_current_error_line %val{cursor_line}
             make-open-error "%reg{1}/%reg{2}" "%reg{3}" "%reg{4}" "%reg{5}"
         } catch %{