Improve xbps_end() and use it before exit(3)ing.

- Simplify xbps_repo_open::repo_get_dict().
- Use xbps_end() in the utils where necessary.
- Make xbps_end() call xbps_pkgdb_unlock() if necessary.
- Make xbps_end() release rpool resources.
- Make xbps_end() release resources from xbps_handle.
- Fixed 90% of reported leaks (still reachable at exit) from valgrind.

That was to silence valgrind's memcheck with --leak-check=full.

bin/xbps-query/main.c

@@ -296,5 +296,6 @@ main(int argc, char **argv)
 		rv = show_pkg_revdeps(&xh, pkg, repo_mode);
 	}
 
+	xbps_end(&xh);
 	exit(rv);
 }

bin/xbps-query/search.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2008-2014 Juan Romero Pardines.
+ * Copyright (c) 2008-2015 Juan Romero Pardines.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -230,13 +230,16 @@ search_repo_cb(struct xbps_repo *repo, void *arg, bool *done _unused)
 {
 	xbps_array_t allkeys;
 	struct search_data *sd = arg;
+	int rv;
 
 	if (repo->idx == NULL)
 		return 0;
 
 	sd->repourl = repo->uri;
 	allkeys = xbps_dictionary_all_keys(repo->idx);
-	return xbps_array_foreach_cb(repo->xhp, allkeys, repo->idx, search_array_cb, sd);
+	rv = xbps_array_foreach_cb(repo->xhp, allkeys, repo->idx, search_array_cb, sd);
+	xbps_object_release(allkeys);
+	return rv;
 }
 
 int

bin/xbps-query/show-deps.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2009-2014 Juan Romero Pardines.
+ * Copyright (c) 2009-2015 Juan Romero Pardines.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -85,5 +85,6 @@ show_pkg_revdeps(struct xbps_handle *xhp, const char *pkg, bool repomode)
 		xbps_array_get_cstring_nocopy(revdeps, i, &pkgdep);
 		printf("%s\n", pkgdep);
 	}
+	xbps_object_release(revdeps);
 	return 0;
 }