Close streams in UploaderStrategy

- Eliminate logs like:

A resource was acquired at attached stack trace but never released.
  See java.io.Closeable for information on avoiding resource leaks.
  java.lang.Throwable: Explicit termination method 'end' not called
      at dalvik.system.CloseGuard.open(CloseGuard.java:180)
      at java.util.zip.Inflater.<init>(Inflater.java:82)
      at com.android.okhttp.okio.GzipSource.<init>(GzipSource.java:62)
      at com.android.okhttp.internal.http.HttpEngine.unzip(HttpEngine.java:645)
      at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:827)
      at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:443)
      at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:388)
      at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:501)
      at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
      at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java)
      at com.cloudinary.android.UploaderStrategy.callApi(UploaderStrategy.java:81)
      at com.cloudinary.Uploader.callApi(Uploader.java:22)
      at com.cloudinary.Uploader.upload(Uploader.java:55)

Author: elevenfive

cloudinary-android/src/main/java/com/cloudinary/android/UploaderStrategy.java

@@ -5,6 +5,7 @@
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.util.Collection;
 import java.util.Map;
@@ -75,22 +76,38 @@ public Map callApi(String action, Map<String, Object> params, Map options, Objec
         } else if (file instanceof byte[]) {
             multipart.addFilePart("file", new ByteArrayInputStream((byte[]) file), filename);
         }
+
         HttpURLConnection connection = multipart.execute();
         int code;
+
+        OutputStream outputStream = null;
+
         try {
             code = connection.getResponseCode();
-        } catch (IOException e) {
+            outputStream = connection.getOutputStream();
+        } catch (Exception e) {
             if (e.getMessage().equals("No authentication challenges found")) {
                 // Android trying to be clever...
                 code = 401;
             } else {
                 throw e;
             }
+        } finally {
+            if (outputStream != null) {
+                try {
+                    outputStream.close();
+                } catch (Exception e) {}
+            }
         }
+
         InputStream responseStream = code >= 400 ? connection.getErrorStream() : connection.getInputStream();
         String responseData = readFully(responseStream);
         connection.disconnect();
 
+        try {
+            responseStream.close();
+        } catch (Exception e) {}
+
         if (code != 200 && code != 400 && code != 404 && code != 500) {
             throw new RuntimeException("Server returned unexpected status code - " + code + " - " + responseData);
         }