cpu-exec: Change cpu_loop_exit() argument to CPUState

Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/target-openrisc/exception.c b/target-openrisc/exception.c
index b96f3f8..74652a5 100644
--- a/target-openrisc/exception.c
+++ b/target-openrisc/exception.c
@@ -25,5 +25,5 @@
     CPUState *cs = CPU(cpu);
 
     cs->exception_index = excp;
-    cpu_loop_exit(&cpu->env);
+    cpu_loop_exit(cs);
 }