fix for https://github.com/opnsense/core/issues/264

when a conditional is the last stament on the line, either make sure there's an extra new line or add some characters behind it.
"trim_blocks" is removing this new line otherwise (http://jinja.pocoo.org/docs/dev/api/#basics).

src/opnsense/service/templates/OPNsense/Proxy/squid.conf

@@ -8,6 +8,7 @@
 {%      for intf_key,intf_item in interfaces.iteritems() %}
 {%          if intf_key == interface and intf_item.ipaddr != 'dhcp' %}
 http_port {{intf_item.ipaddr}}:{{  OPNsense.proxy.forward.port }} {%if OPNsense.proxy.forward.transparentMode == '1' %}intercept{% endif %}
+
 {%          endif %}
 {%      endfor %}
 {# virtual ip's #}
@@ -15,6 +16,7 @@ http_port {{intf_item.ipaddr}}:{{  OPNsense.proxy.forward.port }} {%if OPNsense.
 {%          for intf_key,intf_item in virtualip.iteritems() %}
 {%              if intf_item.interface == interface and intf_item.mode == 'ipalias' %}
 http_port {{intf_item.subnet}}:{{  OPNsense.proxy.forward.port }} {%if OPNsense.proxy.forward.transparentMode == '1' %}intercept{% endif %}
+
 {%              endif %}
 {%          endfor %}
 {%      endif %}
@@ -27,6 +29,7 @@ http_port {{intf_item.subnet}}:{{  OPNsense.proxy.forward.port }} {%if OPNsense.
 {%      for intf_key,intf_item in interfaces.iteritems() %}
 {%          if intf_key == interface and intf_item.ipaddr != 'dhcp' %}
 ftp_port {{intf_item.ipaddr}}:{{  OPNsense.proxy.forward.ftpPort }} {%if OPNsense.proxy.forward.ftpTransparentMode == '1' %}intercept{% else %}accel ftp-track-dirs protocol=HTTP{% endif %}
+
 {%          endif %}
 {%      endfor %}
 {# virtual ip's #}
@@ -34,6 +37,7 @@ ftp_port {{intf_item.ipaddr}}:{{  OPNsense.proxy.forward.ftpPort }} {%if OPNsens
 {%          for intf_key,intf_item in virtualip.iteritems() %}
 {%              if intf_item.interface == interface and intf_item.mode == 'ipalias' %}
 ftp_port {{intf_item.subnet}}:{{  OPNsense.proxy.forward.ftpPort }} {%if OPNsense.proxy.forward.ftpTransparentMode == '1' %}intercept{% else %}accel ftp-track-dirs protocol=HTTP{% endif %}
+
 {%              endif %}
 {%          endfor %}
 {%      endif %}