Fixed some MinGW warnings and added a missing variable initialization

OSCWidgets/FadeButton.cpp

@@ -448,6 +448,9 @@ bool FadeButton::event(QEvent *event)
 					event->accept();
 				}
 				return true;
+
+			default:
+				break;
 		}
 	}
 

OSCWidgets/LogWidget.cpp

@@ -217,6 +217,9 @@ bool LogWidget::event(QEvent *event)
 		case QEvent::FontChange:
 			UpdateFont();
 			break;
+
+		default:
+			break;
 	}
 
 	return QWidget::event(event);

OSCWidgets/ToyActivity.cpp

@@ -118,6 +118,9 @@ void FadeActivity::SetOn(bool b)
 			case FADE_OUT:
 				onUpdate();
 				break;
+
+			default:
+				break;
 		}
 	}
 }
@@ -144,6 +147,9 @@ float FadeActivity::GetFadeOpacity() const
 
 		case FADE_OUT:
 			return (1.0f - GetFadePercent());
+
+		default:
+			break;
 	}
 
 	return 0;
@@ -165,6 +171,9 @@ float FadeActivity::GetFadePercent() const
 
 		case FADE_OUT:
 			return ((m_FadeTiming.out==0) ? 1.0f : (m_FadeElapsed/static_cast<float>(m_FadeTiming.out)));
+
+		default:
+			break;
 	}
 
 	return 0;

OSCWidgets/ToyPedal.cpp

@@ -123,6 +123,9 @@ void FadePedal::Update(unsigned int ms)
 				}
 			}
 			break;
+
+		default:
+			break;
 	}
 
 	// age ticks, but always keep last ticked value

OSCWidgets/ToyWindow.cpp

@@ -493,6 +493,7 @@ void EditFrame::paintEvent(QPaintEvent* /*event*/)
 
 ToyWindowTab::ToyWindowTab(QWidget *parent)
 	: QWidget(parent)
+	, m_Mode(ToyWidget::MODE_DEFAULT)
 	, m_ShowGrid(false)
 	, m_MouseDown(false)
 {
@@ -774,6 +775,9 @@ bool ToyWindowTab::event(QEvent *event)
 		case QEvent::PaletteChange:
 			UpdateGridBackground();
 			break;
+
+		default:
+			break;
 	}
 
 	return QWidget::event(event);