hacky fix for osx

lib/msf/base/sessions/meterpreter.rb

@@ -647,6 +647,8 @@ class Meterpreter < Rex::Post::Meterpreter::Client
         ["#{self.arch}.dll"]
       when 'linux' , 'aix' , 'hpux' , 'irix' , 'unix'
         ['bin', 'elf']
+      when 'osx'
+        ['elf']
       when 'android', 'java'
         ['jar']
       when 'php'

lib/rex/post/meterpreter/client_core.rb

@@ -305,7 +305,9 @@ class ClientCore < Extension
 
     modnameprovided = mod
     suffix = nil
-    if client.binary_suffix.size > 1
+    if not client.binary_suffix
+      suffix = ''
+    elsif client.binary_suffix.size > 1
       client.binary_suffix.each { |s|
         if (mod =~ /(.*)\.#{s}/ )
           mod = $1

lib/rex/post/meterpreter/ui/console/command_dispatcher/core.rb

@@ -1178,7 +1178,7 @@ class Console::CommandDispatcher::Core
       md = m.downcase
       modulenameprovided = md
 
-      if client.binary_suffix.size > 1
+      if client.binary_suffix and client.binary_suffix.size > 1
         client.binary_suffix.each { |s|
           if (md =~ /(.*)\.#{s}/ )
             md = $1