used wrong value, causing a use of uninitialited value

.gitignore

@@ -6,4 +6,5 @@ config.h
 *.oo
 testmodbus-server
 testmodbus-server.exe
+default.modbus
 

Changelog

@@ -1,3 +1,5 @@
+2022-10-31:
+- fixed use of uninitialized and wrong value.
 
 2022-05-30:
 - display issues with signed and unsigned int16 in the values tab.

tcp.cc

@@ -233,7 +233,7 @@ int TCP::Connect() {
 
     err = getaddrinfo(remote_host.c_str(), remote_port.c_str(), &hints, &res);
     if (err != 0) {
-        fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
+        fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(err));
         return 0;
     }