Cancel orphan toasts

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

@@ -679,8 +679,11 @@ public class ActivityEML extends ActivityBase {
 
             @Override
             protected void onDestroyed(Bundle args) {
+                if (toast != null) {
+                    toast.cancel();
                     toast = null;
                 }
+            }
 
             @Override
             protected void onException(Bundle args, @NonNull Throwable ex) {

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

@@ -791,8 +791,11 @@ public class ActivitySetup extends ActivityBase implements FragmentManager.OnBac
 
             @Override
             protected void onDestroyed(Bundle args) {
+                if (toast != null) {
+                    toast.cancel();
                     toast = null;
                 }
+            }
 
             @Override
             protected void onException(Bundle args, Throwable ex) {

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

@@ -413,8 +413,11 @@ public class AdapterRule extends RecyclerView.Adapter<AdapterRule.ViewHolder> {
 
                         @Override
                         protected void onDestroyed(Bundle args) {
+                            if (toast != null) {
+                                toast.cancel();
                                 toast = null;
                             }
+                        }
 
                         @Override
                         protected void onException(Bundle args, Throwable ex) {

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

@@ -2397,8 +2397,11 @@ public class FragmentCompose extends FragmentBase {
 
                     @Override
                     protected void onDestroyed(Bundle args) {
+                        if (toast != null) {
+                            toast.cancel();
                             toast = null;
                         }
+                    }
 
                     @Override
                     protected void onException(Bundle args, Throwable ex) {
@@ -2474,8 +2477,11 @@ public class FragmentCompose extends FragmentBase {
 
             @Override
             protected void onDestroyed(Bundle args) {
+                if (toast != null) {
+                    toast.cancel();
                     toast = null;
                 }
+            }
 
             @Override
             protected void onException(Bundle args, Throwable ex) {

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

@@ -498,8 +498,11 @@ public class FragmentContacts extends FragmentBase {
 
             @Override
             protected void onDestroyed(Bundle args) {
+                if (toast != null) {
+                    toast.cancel();
                     toast = null;
                 }
+            }
 
             @Override
             protected void onException(Bundle args, Throwable ex) {
@@ -597,8 +600,11 @@ public class FragmentContacts extends FragmentBase {
 
             @Override
             protected void onDestroyed(Bundle args) {
+                if (toast != null) {
+                    toast.cancel();
                     toast = null;
                 }
+            }
 
             @Override
             protected void onException(Bundle args, Throwable ex) {