xbps-query: use get_maxcols() from xbps-install.

bin/xbps-query/Makefile

@@ -3,7 +3,7 @@ TOPDIR = ../..
 
 BIN = xbps-query
 OBJS =  main.o list.o show-deps.o show-info-files.o
-OBJS += ownedby.o search.o
+OBJS += ownedby.o search.o ../xbps-install/util.o
 MAN = $(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-query/defs.h

@@ -28,6 +28,8 @@
 
 #include <xbps_api.h>
 
+#include "../xbps-install/defs.h"
+
 #ifndef __UNCONST
 #define __UNCONST(a)    ((void *)(unsigned long)(const void *)(a))
 #endif
@@ -55,7 +57,6 @@ int	ownedby(struct xbps_handle *, int, char **);
 int	repo_ownedby(struct xbps_handle *, int, char **);
 
 /* From list.c */
-int		get_maxcols(void);
 unsigned int	find_longest_pkgver(struct xbps_handle *, prop_object_t);
 
 int	list_pkgs_in_dict(struct xbps_handle *, prop_object_t, void *, bool *);

bin/xbps-query/list.c

@@ -38,17 +38,6 @@ struct list_pkgver_cb {
 	int maxcols;
 };
 
-int
-get_maxcols(void)
-{
-	struct winsize ws;
-
-	if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) == 0)
-		return ws.ws_col;
-
-	return 80;
-}
-
 int
 list_pkgs_in_dict(struct xbps_handle *xhp,
 		  prop_object_t obj,