fixup! Keep optimized opcodes if the result is known-used

Author: TimWolla

Zend/tests/attributes/nodiscard/010.phpt

@@ -34,16 +34,16 @@ $_main:
 0000 INIT_FCALL 0 %d string("tmpfile")
 0001 V3 = DO_ICALL
 0002 ASSIGN CV0($f) V3
-0003 INIT_FCALL 2 112 string("flock")
+0003 INIT_FCALL 2 %d string("flock")
 0004 SEND_VAR CV0($f) 1
 0005 SEND_VAL int(5) 2
 0006 DO_FCALL_BY_NAME
-0007 INIT_FCALL 2 112 string("flock")
+0007 INIT_FCALL 2 %d string("flock")
 0008 SEND_VAR CV0($f) 1
 0009 SEND_VAL int(5) 2
 0010 V3 = DO_ICALL
 0011 FREE V3
-0012 INIT_FCALL 2 112 string("flock")
+0012 INIT_FCALL 2 %d string("flock")
 0013 SEND_VAR CV0($f) 1
 0014 SEND_VAL int(5) 2
 0015 V3 = DO_ICALL