Fix post mixin platform/session check

lib/msf/core/post_mixin.rb

@@ -166,7 +166,7 @@ module Msf::PostMixin
     if self.platform and self.platform.kind_of?(Msf::Module::PlatformList)
       [
         # Add as necessary
-        "windows", "linux", "osx"
+        'win', 'linux', 'osx'
       ].each do |name|
         if self.platform =~ /#{name}/
           p = Msf::Module::PlatformList.transform(name)
@@ -176,7 +176,7 @@ module Msf::PostMixin
     elsif self.platform and self.platform.kind_of?(Msf::Module::Platform)
       p_klass = Msf::Module::Platform
       case self.platform
-      when 'windows'
+      when 'win'
         return false unless self.platform.kind_of?(p_klass::Windows)
       when 'osx'
         return false unless self.platform.kind_of?(p_klass::OSX)
@@ -188,8 +188,6 @@ module Msf::PostMixin
     # Check to make sure architectures match
     mod_arch = self.module_info['Arch']
     mod_arch = [mod_arch] unless mod_arch.kind_of?(Array)
-    # TODO: what should be done with the likes of ARCH_CMD (and others) ?
-    return false unless mod_arch.include?(self.arch)
 
     # If we got here, we haven't found anything that definitely
     # disqualifies this session.  Assume that means we can use it.