bootctl: fix unclosed quote in debug log

(cherry picked from commit c9e614eb256ec2591170c1b840558103dfa3d2b0)
(cherry picked from commit 4af9f5044a352fc0d67b3eb57ae09b595f724eee)
(cherry picked from commit 7ac7b91ae030b1d6ca0a5efb4a26c8c30f6da5a1)
(cherry picked from commit d1bf709)

Author: MonterraByte

src/boot/bootctl-install.c

@@ -205,7 +205,7 @@ static int version_check(int fd_from, const char *from, int fd_to, const char *t
                                         "Skipping \"%s\", it's owned by another boot loader.", to);
 
         r = compare_version(a, b);
-        log_debug("Comparing versions: \"%s\" %s \"%s", a, comparison_operator(r), b);
+        log_debug("Comparing versions: \"%s\" %s \"%s\"", a, comparison_operator(r), b);
         if (r < 0)
                 return log_warning_errno(SYNTHETIC_ERRNO(ESTALE),
                                          "Skipping \"%s\", newer boot loader version in place already.", to);