Fix syntax error: Remove duplicate offset declaration

reflector/P25Protocol.cpp

@@ -329,7 +329,6 @@ bool CP25Protocol::IsValidDvPacket(const CIp &Ip, const CBuffer &Buffer, std::un
              return true; // Claim valid to prevent "Unknown" log, but return no frame
         }
 
-		int offset = 0;
 		int offset = 0;
 		bool last = false;