Prevent an infinite loop in a fairly rare case, where the infostring is too

full to accept a new name when there is a duplicate name.

source/sv_main.c

@@ -1758,6 +1758,14 @@ SV_ExtractFromUserinfo (client_t *cl)
 			Info_SetValueForKey (cl->userinfo, "name", newname,
 								 MAX_INFO_STRING);
 			val = Info_ValueForKey (cl->userinfo, "name");
+
+                        // if the new name was not set (due to the info string being too long), drop the client to prevent an infinite loop
+                        if(strcmp(val, newname)) {
+                                SV_ClientPrintf (cl, PRINT_HIGH, "Please choose a different name.\n");
+                                Con_Printf("Client %d kicked for invalid name\n", cl->userid);
+                                SV_DropClient (cl);
+                                return;
+                        }
 		} else
 			break;
 	}