connect.c: FIX 'iceConn' shadows a previous local, [-Wshadow]

In function 'IceOpenConnection':  gcc give the following warning:
 connect.c:106:11: warning: declaration of 'iceConn' shadows a previous local  [-Wshadow]
fixed by renaming 2. iceConn to iConn (and all its uses)

Signed-off-by: Walter Harms <wharms@bfs.de>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
6 jobs for cleanup in 1 minute and 50 seconds (queued for 2 seconds)