ensure AskPassphraseDialog::eventFilter forwards events

- instead of "return false;" use "return QDialog::eventFilter(object,
  event);" to harmonize this event filter with our default behaviour
- remove orphan spaces found while editting the files

src/qt/askpassphrasedialog.cpp

@@ -221,7 +221,7 @@ bool AskPassphraseDialog::event(QEvent *event)
     return QWidget::event(event);
 }
 
-bool AskPassphraseDialog::eventFilter(QObject *, QEvent *event)
+bool AskPassphraseDialog::eventFilter(QObject *object, QEvent *event)
 {
     /* Detect Caps Lock.
      * There is no good OS-independent way to check a key state in Qt, but we
@@ -244,5 +244,5 @@ bool AskPassphraseDialog::eventFilter(QObject *, QEvent *event)
             }
         }
     }
-    return false;
+    return QDialog::eventFilter(object, event);
 }

src/qt/askpassphrasedialog.h

@@ -39,7 +39,7 @@ private:
 private slots:
     void textChanged();
     bool event(QEvent *event);
-    bool eventFilter(QObject *, QEvent *event);
+    bool eventFilter(QObject *object, QEvent *event);
 };
 
 #endif // ASKPASSPHRASEDIALOG_H