sd-journal: check retval of sd_id128_from_string call

sshedi · sshedi · commit c9f5ac091740 · 2022-06-14T17:52:48.000+05:30
Fixes: CID#1469712 CID 1469712 (#1 of 1): Unused value (UNUSED_VALUE) returned_value: Assigning value from sd_id128_from_string(word + 2, &boot_id) to r here, but that stored value is overwritten before it can be used.
diff --git a/src/libsystemd/sd-journal/sd-journal.c b/src/libsystemd/sd-journal/sd-journal.c
@@ -987,6 +987,8 @@ _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) {
                 case 'b':
                         boot_id_set = true;
                         r = sd_id128_from_string(word + 2, &boot_id);
+                        if (r < 0)
+                                return r;
                         break;
 
                 case 'm':
