fix for mod platform

git-svn-id: file:///home/svn/incoming/trunk@3222 4d416f70-5f16-0410-b530-b9f4589650da

lib/msf/core/exploit_driver.rb

@@ -49,7 +49,10 @@ class ExploitDriver
 	# current exploit.  Assumes that target_idx is valid.
 	#
 	def compatible_payload?(payload)
-		return ((payload.platform & exploit.targets[target_idx].platform).empty? == false)
+		# Try to use the target's platform in preference of the exploit's
+		exp_platform = exploit.targets[target_idx].platform || exploit.platform
+
+		return ((payload.platform & exp_platform).empty? == false)
 	end
 
 	##