Add a few missing newlines in lldb-server messages

tools/lldb-server/lldb-gdbserver.cpp

if (connection_fd != -1) {
     // Create the connection.
 #if !defined LLDB_DISABLE_POSIX && !defined _WIN32
     ::fcntl(connection_fd, F_SETFD, FD_CLOEXEC);
 #endif
     connection_up.reset(new ConnectionFileDescriptor);
     auto connection_result = connection_up->Connect(connection_url, &error);
     if (connection_result != eConnectionStatusSuccess) {
       fprintf(stderr, "error: failed to connect to client at '%s' "
-                      "(connection status: %d)",
+                      "(connection status: %d)\n",
               connection_url, static_cast<int>(connection_result));
       exit(-1);
     }
     if (error.Fail()) {
-      fprintf(stderr, "error: failed to connect to client at '%s': %s",
+      fprintf(stderr, "error: failed to connect to client at '%s': %s\n",
               connection_url, error.AsCString());
       exit(-1);
     }
   } else if (host_and_port && host_and_port[0]) {
     // Parse out host and port.
     std::string final_host_and_port;
     std::string connection_host;
     std::string connection_port;
#endif
 
 
     if (reverse_connect) {
       // llgs will connect to the gdb-remote client.
 
       // Ensure we have a port number for the connection.
       if (connection_portno == 0) {
         fprintf(stderr, "error: port number must be specified on when using "
-                        "reverse connect");
+                        "reverse connect\n");
         exit(1);
       }
 
       // Build the connection string.
       char connection_url[512];
       snprintf(connection_url, sizeof(connection_url), "connect://%s",
                final_host_and_port.c_str());
 
       // Create the connection.
       connection_up.reset(new ConnectionFileDescriptor);
       auto connection_result = connection_up->Connect(connection_url, &error);
       if (connection_result != eConnectionStatusSuccess) {
         fprintf(stderr, "error: failed to connect to client at '%s' "
-                        "(connection status: %d)",
+                        "(connection status: %d)\n",
                 connection_url, static_cast<int>(connection_result));
         exit(-1);
       }
       if (error.Fail()) {
-        fprintf(stderr, "error: failed to connect to client at '%s': %s",
+        fprintf(stderr, "error: failed to connect to client at '%s': %s\n",
                 connection_url, error.AsCString());
         exit(-1);
       }
     } else {
       std::unique_ptr<Acceptor> acceptor_up(
           Acceptor::Create(final_host_and_port, false, error));
       if (error.Fail()) {
-        fprintf(stderr, "failed to create acceptor: %s", error.AsCString());
+        fprintf(stderr, "failed to create acceptor: %s\n", error.AsCString());
         exit(1);
       }
       error = acceptor_up->Listen(1);
       if (error.Fail()) {
         fprintf(stderr, "failed to listen: %s\n", error.AsCString());
         exit(1);
       }
       const std::string socket_id = acceptor_up->GetLocalSocketId();
       if (!socket_id.empty()) {
         // If we have a named pipe to write the socket id back to, do that now.
         if (named_pipe_path && named_pipe_path[0]) {
           error = writeSocketIdToPipe(named_pipe_path, socket_id);
           if (error.Fail())
-            fprintf(stderr, "failed to write to the named pipe \'%s\': %s",
+            fprintf(stderr, "failed to write to the named pipe \'%s\': %s\n",
                     named_pipe_path, error.AsCString());
         }
         // If we have an unnamed pipe to write the socket id back to, do that
         // now.
         else if (unnamed_pipe_fd >= 0) {
           error = writeSocketIdToPipe(unnamed_pipe_fd, socket_id);
           if (error.Fail())
-            fprintf(stderr, "failed to write to the unnamed pipe: %s",
+            fprintf(stderr, "failed to write to the unnamed pipe: %s\n",
                     error.AsCString());
         }
       } else {
         fprintf(stderr,
                 "unable to get the socket id for the listening connection\n");
       }
 
       Connection *conn = nullptr;