Wait a second before deleting the file, catch an exception on delete, combined these reduce some of the issues around psexec

git-svn-id: file:///home/svn/framework3/trunk@7954 4d416f70-5f16-0410-b530-b9f4589650da

modules/exploits/windows/smb/psexec.rb

@@ -264,9 +264,15 @@ class Metasploit3 < Msf::Exploit::Remote
 			print_status("Error: #{e}")
 		end
 
+		begin
 			print_status("Deleting \\#{filename}...")
+			select(nil, nil, nil, 1.0)
 			simple.connect("ADMIN$")
 			simple.delete("\\#{filename}")
+		rescue ::Interrupt
+			raise $!
+		rescue ::Exception
+		end
 
 		handler
 		disconnect