forgotten (char *) cast for %s format

seems to be a real benefit of FreeBSD 13 vtest over all the other
vtesters. Not even the compulsively obsessive Flexelint complained.

vmod/vmod_debug.c

@@ -234,7 +234,7 @@ priv_ ## name ## _fini(void *ptr)					\
 	const char * const fmt = "priv_" #name "_fini(%p)";		\
 									\
 	AN ## assert (ptr);						\
-	VSL(SLT_Debug, 0, fmt, ptr);					\
+	VSL(SLT_Debug, 0, fmt, (char *)ptr);				\
 	free(ptr);							\
 }									\
 									\

vmod/vmod_debug_obj.c

@@ -159,7 +159,7 @@ obj_priv_ ## name ## _fini(void *ptr)					\
 	const char * const fmt = "obj_priv_" #name "_fini(%p = \"%s\")"; \
 									\
 	AN(ptr);							\
-	VSL(SLT_Debug, 0, fmt, ptr, ptr);				\
+	VSL(SLT_Debug, 0, fmt, ptr, (char *)ptr);			\
 }									\
 									\
 static const struct vmod_priv_methods					\