event/Call: use std::lock_guard

0e487476 · Max Kellermann · f764925e · 0e487476
Commit 0e487476 authored Apr 25, 2019 by Max Kellermann
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Call.cxx src/event/Call.cxx +3 -2

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--- a/src/event/Call.cxx
+++ b/src/event/Call.cxx
@@ -51,10 +51,11 @@ public:
 		defer_event.Schedule();
-		mutex.lock();
+		{
+			const std::lock_guard<Mutex> lock(mutex);
 			while (!done)
 				cond.wait(mutex);
-		mutex.unlock();
+		}
 		if (exception)
 			std::rethrow_exception(exception);