libqos: Give get_machine_allocator() internal linkage

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200424071142.3525-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

tests/qtest/libqos/qos_external.c

@@ -66,7 +66,7 @@ void types_apply_to_node(ObjectTypeInfoList *type_info)
     }
 }
 
-QGuestAllocator *get_machine_allocator(QOSGraphObject *obj)
+static QGuestAllocator *get_machine_allocator(QOSGraphObject *obj)
 {
     return obj->get_driver(obj, "memory");
 }

tests/qtest/libqos/qos_external.h

@@ -18,7 +18,6 @@
 
 #ifndef QOS_EXTERNAL_H
 #define QOS_EXTERNAL_H
-#include "libqos/qgraph.h"
 
 #include "libqos/malloc.h"
 #include "qapi/qapi-types-machine.h"
@@ -26,7 +25,6 @@
 
 void machines_apply_to_node(MachineInfoList *mach_info);
 void types_apply_to_node(ObjectTypeInfoList *type_info);
-QGuestAllocator *get_machine_allocator(QOSGraphObject *obj);
 void *allocate_objects(QTestState *qts, char **path, QGuestAllocator **p_alloc);
 
 #endif