Merge branch 'Bugfix-sigint-time-error' into 'master'

修复 #2 提及的时间结果错误问题，在SIGINT信号处理函数中增加结束时间计算

See merge request common_tools/tcp_burst!4

.gitignore

@@ -1 +1,2 @@
 tcpburst
+.vscode

src/common/abort.c

@@ -34,6 +34,7 @@
 #include "defines.h"
 #include "common.h"
 
+#include <errno.h>
 #include <signal.h>
 #include <stdlib.h>
 
@@ -76,6 +77,8 @@ break_now(int signo)
                 kill(tcpdump.pid, SIGKILL);
 #endif
 */
+        if (gettimeofday(&end, NULL) < 0)
+            errx(-1, "gettimeofday() failed: %s", strerror(errno));
         packet_stats(&begin, &end, bytes_sent, pkts_sent, failed);
         exit(1);
     }