removed trailing whitespace in Doxygen files

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52634 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/sound.h

@@ -27,7 +27,7 @@ public:
         Constructs a wave object from a file or, under Windows, from a Windows
         resource. Call IsOk() to determine whether this
         succeeded.
-        
+
         @param fileName
             The filename or Windows resource.
         @param isResource
@@ -44,12 +44,12 @@ public:
 
     /**
         Constructs a wave object from a file or resource.
-        
+
         @param fileName
             The filename or Windows resource.
         @param isResource
             @true if fileName is a resource, @false if it is a filename.
-        
+
         @returns @true if the call was successful, @false otherwise.
     */
     bool Create(const wxString& fileName, bool isResource = false);
@@ -75,23 +75,23 @@ public:
         calling this function and the sound would continue playing, however this
         currently doesn't work under Windows for sound objects loaded from memory data.
         The possible values for @a flags are:
-        
+
         wxSOUND_SYNC
-        
+
         @c Play will block and wait until the sound is
         replayed.
-        
+
         wxSOUND_ASYNC
-        
+
         Sound is played asynchronously,
         @c Play returns immediately
-        
+
         wxSOUND_ASYNC | wxSOUND_LOOP
-        
+
         Sound is played asynchronously
         and loops until another sound is played,
         Stop() is called or the program terminates.
-        
+
         The static form is shorthand for this code:
     */
     bool Play(unsigned flags = wxSOUND_ASYNC);