Fix unclosed OutputStream in DiskLruCacheWrapper (reported by StrictM…

…ode).

library/src/com/bumptech/glide/resize/cache/DiskLruCacheWrapper.java

@@ -9,6 +9,7 @@
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 
 /**
  * The default DiskCache implementation. There must be no more than one active instance for a given
@@ -77,8 +78,10 @@ public void put(String key, Writer writer) {
             //editor will be null if there are two concurrent puts
             //worst case just silently fail
             if (editor != null) {
-                writer.write(editor.newOutputStream(0));
+                OutputStream os = editor.newOutputStream(0);
+                writer.write(os);
                 editor.commit();
+                os.close();
             }
         } catch (IOException e) {
             e.printStackTrace();