Move cmd local classes into anonymous namespace

common/main/cmd.cpp

@@ -30,6 +30,8 @@
 #include "compiler-make_unique.h"
 #include "compiler-range_for.h"
 
+namespace {
+
 struct cmd_t
 {
 	const char    *name;
@@ -47,6 +49,8 @@ struct cmd_alias_t
 	RAIIdmem<char[]> value;
 };
 
+}
+
 #define CMD_MAX_ALIASES 1024
 
 /* The list of aliases */
@@ -85,12 +89,15 @@ void cmd_addcommand(const char *cmd_name, cmd_handler_t cmd_func, const char *cm
 	con_printf(CON_DEBUG, "cmd_addcommand: added %s", cmd->name);
 }
 
+namespace {
 
 struct cmd_queue_t
 {
 	char *command_line;
 };
 
+}
+
 /* The list of commands to be executed */
 static std::forward_list<cmd_queue_t> cmd_queue;