Fix "include /foo/*.conf" for single matched object in directory

[defanator]

This allows to use configurations like the following:

include /etc/nginx/modsec/custom-rules/*.conf

when there's just one .conf file in /etc/nginx/modsec/custom-rules/.

Currently it fails with the following error message:

root@vagrant:/etc/nginx/modsec# nginx -t
nginx: [emerg] "modsecurity_rules_file" directive Rules error. File: /etc/nginx/modsec/main.conf. Line: 1. Column: 45. /etc/nginx/modsec/custom-rules/*.conf: Not able to open file. Looking at: '/etc/nginx/modsec/custom-rules/*.conf', '/etc/nginx/modsec/custom-rules/*.conf', '/etc/nginx/modsec//etc/nginx/modsec/custom-rules/*.conf', '/etc/nginx/modsec//etc/nginx/modsec/custom-rules/*.conf'. in /etc/nginx/nginx.conf:75
nginx: configuration file /etc/nginx/nginx.conf test failed
root@vagrant:/etc/nginx/modsec# find custom-rules/ -type f
custom-rules/foo.conf

And works fine when there're more than 1 matched files:

root@vagrant:/etc/nginx/modsec# touch custom-rules/bar.conf
root@vagrant:/etc/nginx/modsec# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
root@vagrant:/etc/nginx/modsec# find custom-rules/ -type f
custom-rules/foo.conf
custom-rules/bar.conf

[zimmerle]

ops.

[zimmerle]

merged! thanks!