Fix bug #447944: xbps build failure (gcc 4.4.1)

unsigned int and size_t do not match in size in x86_64, so use
unsigned int in functions expecting this type.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20091010141337-vfoiay5nx8edl0ux

lib/requiredby.c

@@ -85,7 +85,7 @@ remove_pkg_from_reqby(prop_object_t obj, void *arg, bool *loop_done)
 	prop_object_iterator_t iter;
 	const char *pkgname = arg;
 	char *curpkgname;
-	size_t idx = 0;
+	unsigned int idx = 0;
 	bool found = false;
 
 	(void)loop_done;