journal: fix iteration through journal if one file is corrupt

TODO

@@ -22,6 +22,8 @@ Bugfixes:
 
 Features:
 
+* journald: _BOOT_ID triggers too many collisions.
+
 * journald: we currently rotate only after MaxUse+MaxFilesize has been reached.
 
 * reexec journald across initrd transition

src/journal/sd-journal.c

@@ -670,9 +670,10 @@ static int real_journal_next(sd_journal *j, direction_t direction) {
                 bool found;
 
                 r = next_beyond_location(j, f, direction, &o, &p);
-                if (r < 0)
-                        return r;
-                else if (r == 0)
+                if (r < 0) {
+                        log_debug("Can't iterate through %s, ignoring: %s", f->path, strerror(-r));
+                        continue;
+                } else if (r == 0)
                         continue;
 
                 if (!new_current)