Refactor code to remove remote store references when deleting accounts

src/com/fsck/k9/Preferences.java

@@ -12,7 +12,7 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.util.Log;
 
-import com.fsck.k9.mail.MessagingException;
+import com.fsck.k9.mail.Store;
 import com.fsck.k9.preferences.Editor;
 import com.fsck.k9.preferences.Storage;
 
@@ -126,11 +126,9 @@ public class Preferences {
         }
 
         try {
-            account.getRemoteStore().resetRemoteStore(account);
-        } catch (MessagingException e) {
-            Log.e(K9.LOG_TAG, "Failed to reset remote store for account "
-                    + account.getUuid());
-            e.printStackTrace();
+            Store.removeRemoteInstance(account);
+        } catch (Exception e) {
+            Log.e(K9.LOG_TAG, "Failed to reset remote store for account " + account.getUuid(), e);
         }
 
         account.delete(this);

src/com/fsck/k9/mail/Store.java

@@ -111,6 +111,23 @@ public abstract class Store {
         }
     }
 
+    /**
+     * Release reference to a remote mail store instance.
+     *
+     * @param account
+     *         {@link Account} instance that is used to get the remote mail store instance.
+     */
+    public synchronized static void removeRemoteInstance(Account account) {
+        String uri = account.getStoreUri();
+
+        if (uri.startsWith("local")) {
+            throw new RuntimeException("Asked to get non-local Store object but given " +
+                    "LocalStore URI");
+        }
+
+        sStores.remove(uri);
+    }
+
     /**
      * Decodes the contents of store-specific URIs and puts them into a {@link ServerSettings}
      * object.
@@ -208,14 +225,4 @@ public abstract class Store {
     public Account getAccount() {
         return mAccount;
     }
-
-    public void resetRemoteStore(Account account) {
-        String uri = account.getStoreUri();
-        if (uri.startsWith("local")) {
-            throw new RuntimeException(
-                    "Asked to get non-local Store object but given LocalStore URI");
-        }
-        sStores.remove(uri);
-    }
-
 }