Fix build when configured with --enable-io-thread

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/cpus.h b/cpus.h
index 67c9a3b..4ebad3a 100644
--- a/cpus.h
+++ b/cpus.h
@@ -1,8 +1,9 @@
 #ifndef QEMU_CPUS_H
 #define QEMU_CPUS_H
 
-/* cpu-common.c */
+/* cpus.c */
 int qemu_init_main_loop(void);
+void qemu_main_loop_start(void);
 void resume_all_vcpus(void);
 void pause_all_vcpus(void);
 
@@ -10,6 +11,7 @@
 extern int smp_cores;
 extern int smp_threads;
 extern int debug_requested;
+extern int vmstop_requested;
 void vm_state_notify(int running, int reason);
 bool tcg_cpu_exec(void);
 void set_numa_modes(void);