Logfile size put in allowed boumnds.

storage/maria/unittest/ma_test_loghandler_purge-t.c

@@ -13,7 +13,7 @@ static const char *default_dbug_option;
 
 #define PCACHE_SIZE (1024*1024*10)
 #define PCACHE_PAGE TRANSLOG_PAGE_SIZE
-#define LOG_FILE_SIZE (4*1024L*1024L)
+#define LOG_FILE_SIZE (8*1024L*1024L)
 #define LOG_FLAGS 0
 #define LONG_BUFFER_SIZE (LOG_FILE_SIZE + LOG_FILE_SIZE / 2)