setting host_name to address if host_name is blank.

Author: darkbushido

lib/msf/core/db_manager/host.rb

@@ -175,12 +175,14 @@ def report_host(opts)
     if opts[:info]
       opts[:info] = opts[:info][0,65535]
     end
-
+        
     # Truncate the name field at the maximum field length
     if opts[:name]
       opts[:name] = opts[:name][0,255]
+    else
+      opts[:name] = addr
     end
-
+    
     if opts[:os_name]
       os_name, os_flavor = split_windows_os_name(opts[:os_name])
       opts[:os_name] = os_name if os_name.present?