Use different error condition in ACCEL_LOG_FATAL test

This test fails on s390x with opcache. Presumably the large allocation
works fine there as long as it's not used.

Switch to a different error condition that produces a more reliable
failure.

Author: nikic

ext/opcache/tests/log_verbosity_bug.phpt

@@ -1,15 +1,14 @@
 --TEST--
 Test ACCEL_LOG_FATAL will cause the process to die even if not logged
 --DESCRIPTION--
-This test forces the opcache to error by setting memory_comsumption very large.
+This test forces the opcache to error by setting file_cache_only without file_cache.
 The resulting ACCEL_LOG_FATAL should cause php to die.
 The process should die regardless of the log_verbosity_level.
 --INI--
 opcache.enable=1
 opcache.enable_cli=1
-opcache.file_cache_only=0
-opcache.file_cache_fallback=0
-opcache.memory_consumption=999999999
+opcache.file_cache=
+opcache.file_cache_only=1
 opcache.log_verbosity_level=-1
 --EXTENSIONS--
 opcache