Fix declaration of shared global variables async_*

In a header file write it with extern keyword. And in one of the *.c
file declare it without extern keyword.

diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 5ec728af0bf67d98a35cef9a1a7512ca5893ce3a..867f005f4b1868082dbb84830c1d4b4c396bc43c 100644 (file)
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -2071,6 +2071,7 @@ watchdog_stop(void)
 
 volatile int async_config_flag;                /* Asynchronous reconfiguration/dump scheduled */
 volatile int async_dump_flag;
+volatile int async_shutdown_flag;
 
 void
 io_init(void)