Get rid of shadow declarations

Reported-by: Bruce Cran <bruce@cran.org.uk>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/eta.c b/eta.c
index ba6a398..b367ce9 100644
--- a/eta.c
+++ b/eta.c
@@ -391,7 +391,7 @@
 	fflush(stdout);
 }
 
-void print_status_init(int thread_number)
+void print_status_init(int thr_number)
 {
-	run_str[thread_number] = 'P';
+	run_str[thr_number] = 'P';
 }