[svn-r30113] Description:

Clean up warnings (from 2774 -> 1560, with my standard debug build)

Tested on:
    MacOSX/64 10.11.5 (amazon) w/serial, parallel & production
    (h5committest forthcoming)

tools/h5diff/h5diff_main.c

@@ -136,7 +136,8 @@ int main(int argc, const char *argv[])
  *
  *-------------------------------------------------------------------------
  */
-void h5diff_exit(int status)
+void
+h5diff_exit(int status)
 {
     exit(status);
 }