Make sure URL connection is closed

app/src/main/java/eu/faircode/email/ContactInfo.java

@@ -354,7 +354,7 @@ public class ContactInfo {
                                 emailGravatar.put(gkey, new Gravatar(false));
                             }
                         } else
-                            throw new IOException("HTTP status=" + status);
+                            throw new IOException("Error " + status + ": " + urlConnection.getResponseMessage());
 
                     } catch (Throwable ex) {
                         Log.w(ex);

app/src/main/java/eu/faircode/email/ImageHelper.java

@@ -639,6 +639,7 @@ class ImageHelper {
                 urlConnection.setRequestProperty("User-Agent", WebViewEx.getUserAgent(context));
                 urlConnection.connect();
 
+                try {
                     int status = urlConnection.getResponseCode();
 
                     if (status == HttpURLConnection.HTTP_MOVED_PERM ||
@@ -662,7 +663,11 @@ class ImageHelper {
                     }
 
                     if (status != HttpURLConnection.HTTP_OK)
-                    throw new IOException("HTTP status=" + status);
+                        throw new IOException("Error " + status + ": " + urlConnection.getResponseMessage());
+                } catch (IOException ex) {
+                    urlConnection.disconnect();
+                    throw ex;
+                }
 
                 break;
             }