sysemu: Let VMChangeStateHandler take boolean 'running' argument

The 'running' argument from VMChangeStateHandler does not require
other value than 0 / 1. Make it a plain boolean.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210111152020.1422021-3-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
diff --git a/softmmu/runstate.c b/softmmu/runstate.c
index 0187f18..ce8977c 100644
--- a/softmmu/runstate.c
+++ b/softmmu/runstate.c
@@ -317,7 +317,7 @@
     g_free(e);
 }
 
-void vm_state_notify(int running, RunState state)
+void vm_state_notify(bool running, RunState state)
 {
     VMChangeStateEntry *e, *next;