remove some GNUisms. by Dan Fandrich (dan AT coneharvesters.com)

function                                             old     new   delta
logdirs_reopen                                      1310    1308      -2
read_line_input                                     4757    4753      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-6)               Total: -6 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/loop.c b/libbb/loop.c
index 24dab1a..3fec7ad 100644
--- a/libbb/loop.c
+++ b/libbb/loop.c
@@ -105,7 +105,7 @@
 	}
 
 	/* Find a loop device.  */
-	try = *device ? : dev;
+	try = *device ? *device : dev;
 	for (i = 0; rc; i++) {
 		sprintf(dev, LOOP_FORMAT, i);