Fix simple_injector (missed REQUIRE for RETRACT)

tests/Makefile.am

@@ -152,6 +152,7 @@ INJECTOR_OPS="\
              DECLARE cdo1 1023      SEAL cdo1 -1       OFFER cdo1 -1    \
              DECLARE cdo2 1023000   SEAL cdo2 -1       OFFER cdo2 -1    \
              DECLARE cdo3 102       SEAL cdo3 -1       OFFER cdo3 -1    \
+             DECLARE cdo1a 107      REQUIRE cdo1a -1                    \
 	     RETRACT cdo1a -1       DISPOSE cdo1a -1                    \
              WITHDRAW cdo1 -1       WITHDRAW cdo2 -1   WITHDRAW cdo3 -1 \
 	     DISPOSE  cdo3 -1       DISPOSE  cdo2 -1   DISPOSE  cdo1 -1"

tests/simple_archiver.c

@@ -189,7 +189,7 @@ CHEAT_TEST(simple_archiver,
                  /* dispose all */
                  cheat_assert(MSTRO_OK==mstro_pool_event_dispose(e));
                } else {
-                 fprintf(stdout, "No event available, looping\n");
+                 //fprintf(stdout, "No event available, looping\n");
                  /* NULL e should give an error, even if subscription
                   * itself would like ack */
                  cheat_assert(MSTRO_OK!=mstro_subscription_ack(