cups: Fix endless loop

Fix endless loop in ipp backend (http://www.cups.org/str.php?L4194)

Signed-off-by: Bernd Krumböck <krumboeck@universalnet.at>
Patchwork: http://patchwork.openwrt.org/patch/3070/
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@34931 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/cups/patches/210-str4194.patch

@@ -0,0 +1,11 @@
+--- cups-1.5.4/backend/ipp.c	(revision 10619)
++++ cups-1.5.4/backend/ipp.c	(working copy)
+@@ -952,6 +952,8 @@
+ 	_cupsLangPrintFilter(stderr, "ERROR",
+ 	                     _("Unable to get printer status."));
+         sleep(10);
++
++	httpReconnect(http);
+       }
+
+       ippDelete(supported);