Prevent crash

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

@@ -35,6 +35,7 @@ import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
+import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
@@ -510,16 +511,18 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         }
 
         if (intent.hasExtra(Intent.EXTRA_PROCESS_TEXT)) {
+            CharSequence csearch = getIntent().getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
+            String search = (csearch == null ? null : csearch.toString());
+            if (!TextUtils.isEmpty(search)) {
                 searching = true;
-            String search = getIntent().getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT).toString();
-
-            intent.removeExtra(Intent.EXTRA_PROCESS_TEXT);
-            setIntent(intent);
-
                 FragmentMessages.search(
                         ActivityView.this, ActivityView.this, getSupportFragmentManager(),
                         -1, false, search);
             }
+
+            intent.removeExtra(Intent.EXTRA_PROCESS_TEXT);
+            setIntent(intent);
+        }
     }
 
     @Override