Update logstash.bat

Author: jordansissel

recipes/windows-service/logstash.bat

@@ -1,8 +1,7 @@
-
 C:
 cd \logstash
 
 set HOME=c:/logstash/sincedb
 
-"c:\Program Files\Java\jdk1.6.0_37\bin\java.exe" -Xmx32M -jar logstash-1.1.7-monolithic.jar agent --config logstash.conf --log logstash.log
+"c:\Program Files\Java\jdk1.6.0_37\bin\java.exe" -Xmx256m -jar logstash-1.1.7-monolithic.jar agent --config logstash.conf --log logstash.log