remove some unneccessary checks - thanks to Petr Uzel

Makefile

@@ -11,7 +11,7 @@ man8 := $(DESTDIR)/share/man/man8/
 all: nethogs decpcap_test 
 # nethogs_testsum
 
-CFLAGS=-g -Wall
+CFLAGS=-g -Wall -Wextra
 #CFLAGS=-O2
 OBJS=packet.o connection.o process.o refresh.o decpcap.o cui.o inode2prog.o conninode.o
 .PHONY: tgz

cui.cpp

@@ -37,7 +37,6 @@ public:
 	{
 		if (!ROBUST) 
 		{
-			assert (uid >= 0);
 			assert (pid >= 0);
 		}
 		m_name = name; 
@@ -48,7 +47,6 @@ public:
 		m_uid = uid;
 		if (!ROBUST) 
 		{
-			assert (m_uid >= 0);
 			assert (m_pid >= 0);
 		}
 	}
@@ -88,7 +86,6 @@ void Line::show (int row)
 {
 	if (!ROBUST)
 	{
-		assert (m_uid >= 0);
 		assert (m_pid >= 0);
 		assert (m_pid <= 100000);
 	}

process.h

@@ -65,7 +65,6 @@ public:
 	void check () {
 		if (!ROBUST) {
 			assert (pid >= 0);
-			assert (uid >= 0);
 		}
 	}
 	
@@ -91,7 +90,6 @@ public:
 
 	void setUid(uid_t m_uid)
 	{
-		assert (m_uid >= 0);
 		uid = m_uid;
 	}
 private: