Initialize @capture_count

Author: HD Moore

lib/msf/core/exploit/capture.rb

@@ -166,6 +166,7 @@ def capture_extract_ies(raw)
       #
       def each_packet
         return unless capture
+        @capture_count ||= 0
         capture.each do |pkt|
           yield(pkt)
           @capture_count += 1
@@ -248,7 +249,7 @@ def capture_sendto(payload="", dhost=nil, bcast=false, dev=nil)
 
       # The return value either be a PacketFu::Packet object, or nil
       def inject_reply(proto=:udp, pcap=self.capture)
-        # Defaults to ~2 seconds 
+        # Defaults to ~2 seconds
         to = (datastore['TIMEOUT'] * 4) / 1000.0
 	raise RuntimeError, "Could not access the capture process (remember to open_pcap first!)" if not pcap
         begin
@@ -339,7 +340,7 @@ def arp(target_ip=nil)
         p = arp_packet(target_ip, source_ip)
 
         # Try up to 3 times to get an ARP response
-        1.upto(3) do 
+        1.upto(3) do
           inject_eth(:eth_type  => 0x0806,
             :payload   => p,
             :pcap      => self.arp_capture,