Fixed uninitialized sock

srsenb/test/upper/ip_test.cc

@@ -591,7 +591,7 @@ int main(int argc, char *argv[])
 int setup_if_addr(char *ip_addr)
 {
   char *dev = (char*) "tun_srsenb";
-  int sock;
+  int sock = -1;
 
   // Construct the TUN device
   int tun_fd = open("/dev/net/tun", O_RDWR);
@@ -647,7 +647,11 @@ int setup_if_addr(char *ip_addr)
   return(tun_fd);
 
 clean_exit:
+  if (sock != -1) {
     shutdown(sock, SHUT_RDWR);
+  }
+  if (tun_fd != -1) {
     close(tun_fd);
+  }
   return SRSLTE_ERROR;
 }