ringbuffer, ringbufferpool: cleanup

Change-Id: Ia7818aaa83307d5ff8bebe9681182bcec5d16e9b

src/media/audio/ringbuffer.h

@@ -35,7 +35,6 @@
 #include <vector>
 #include <fstream>
 
-
 namespace ring {
 
 /**

src/media/audio/ringbufferpool.h

@@ -39,7 +39,6 @@ class RingBufferPool {
     static const char * const DEFAULT_ID;
 
     RingBufferPool();
-
     ~RingBufferPool();
 
     int getInternalSamplingRate() const {
@@ -122,13 +121,10 @@ class RingBufferPool {
     NON_COPYABLE(RingBufferPool);
 
     // A set of RingBuffers readable by a call
-        typedef std::set<std::shared_ptr<RingBuffer>,
-            std::owner_less<std::shared_ptr<RingBuffer>> > ReadBindings;
-
-        const RingBufferPool::ReadBindings*
-		getReadBindings(const std::string& call_id) const;
+    using ReadBindings = std::set<std::shared_ptr<RingBuffer>, std::owner_less<std::shared_ptr<RingBuffer>>>;
 
-        RingBufferPool::ReadBindings* getReadBindings(const std::string& call_id);
+    const ReadBindings* getReadBindings(const std::string& call_id) const;
+    ReadBindings* getReadBindings(const std::string& call_id);
 
     void removeReadBindings(const std::string& call_id);