Fix possible double close and closing uninitialized fd

Author: TERESH1

C/inet/libinetsocket.c

@@ -152,7 +152,7 @@ static inline signed int check_error(int return_value) {
  */
 int create_inet_stream_socket(const char *host, const char *service,
                               char proto_osi3, int flags) {
-    int sfd, return_value;
+    int sfd = -1, return_value;
     struct addrinfo hint, *result, *result_check;
 #ifdef VERBOSE
     const char *errstring;
@@ -207,6 +207,7 @@ int create_inet_stream_socket(const char *host, const char *service,
              break;
 
         close(sfd);
+        sfd = -1;
     }
 
     // We do now have a working socket STREAM connection to our target