check-elf-dynamic-objects: wait only once

Norbert points out that wait without arguments will wait for all
outstanding processes.

Change-Id: If850fd4a2e46a2c05d2917d38478ee2d3112bd78

bin/check-elf-dynamic-objects

@@ -188,7 +188,7 @@ else
 	)>> check_elf.out &
     done
 
-    for file in ${files}; do wait; done
+    wait
 
     if [ -s check_elf.out ] ; then
 	cat check_elf.out