Refactor to always calling FileContent.getOutputStream

... instead of `AbstractFileObject.getOutputStream`. This allows us to
not call `endOutput` explicitly from anywhere other than `DefaultFileContent`

Author: boris-petrov

commons-vfs2/src/main/java/org/apache/commons/vfs2/provider/AbstractFileObject.java

@@ -319,8 +319,9 @@ public void createFile() throws FileSystemException {
                 }
 
                 if (!exists()) {
-                    getOutputStream().close();
-                    endOutput();
+                    try (FileContent content = getContent()) {
+                        content.getOutputStream().close();
+                    }
                 }
             } catch (final RuntimeException re) {
                 throw re;

commons-vfs2/src/main/java/org/apache/commons/vfs2/provider/ram/RamFileOutputStream.java

@@ -19,8 +19,6 @@
 import java.io.IOException;
 import java.io.OutputStream;
 
-import org.apache.commons.vfs2.FileSystemException;
-
 /**
  * OutputStream to a RamFile.
  */
@@ -57,13 +55,7 @@ public void close() throws IOException {
         if (exception != null) {
             throw exception;
         }
-        try {
-            this.closed = true;
-            // Close the
-            this.file.endOutput();
-        } catch (final Exception e) {
-            throw new FileSystemException(e);
-        }
+        this.closed = true;
     }
 
     @Override