osd/net.c: fix queue handling a bit
osd/net.c: fix queue handling a bit

Actually increment g_osd_net_queue_len like we're supposed to. Drop
connections if the queue gets too long.

Signed-off-by: Colin McCabe <3142ce8a0bdba4a38073365893e6b74f72d9c512@alumni.cmu.edu>

cmccabe/redfish,cmccabe/redfish,cmccabe/redfish,cmccabe/redfish,cmccabe/redfish