qapi: fix qapi_dealloc_type_size parameter type

The second parameter to qapi_dealloc_type_size should be a uint64_t *,
not a size_t *. This was causing our 32 bit x86 build to fail, since
warnings are treated as errors.
Signed-off-by: NBruce Rogers <brogers@suse.com>
Reviewed-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>

qapi/qapi-dealloc-visitor.c

@@ -132,7 +132,7 @@ static void qapi_dealloc_type_number(Visitor *v, double *obj, const char *name,
 {
 }
 
-static void qapi_dealloc_type_size(Visitor *v, size_t *obj, const char *name,
+static void qapi_dealloc_type_size(Visitor *v, uint64_t *obj, const char *name,
                                    Error **errp)
 {
 }