execute: don't fail if we cannot fix OOM in a container

TODO

@@ -23,6 +23,8 @@ F15:
 
 * get writev() /dev/kmsg support into the F15 kernel
 
+* fix sd_is_socket() invocation in dbus
+
 Features:
 
 * fix alsa mixer restore to not print error when no config is stored

src/execute.c

@@ -1106,7 +1106,8 @@ int exec_spawn(ExecCommand *command,
                                 snprintf(t, sizeof(t), "%i", adj);
                                 char_array_0(t);
 
-                                if (write_one_line_file("/proc/self/oom_adj", t) < 0) {
+                                if (write_one_line_file("/proc/self/oom_adj", t) < 0
+                                    && errno != EACCES) {
                                         r = EXIT_OOM_ADJUST;
                                         goto fail_child;
                                 }