citra-qt: Fixed some Qt errors on initialization

src/citra_qt/debugger/graphics_framebuffer.cpp

@@ -158,7 +158,7 @@ void GraphicsFramebufferWidget::OnFramebufferAddressChanged(qint64 new_value)
     }
 }
 
-void GraphicsFramebufferWidget::OnFramebufferWidthChanged(unsigned int new_value)
+void GraphicsFramebufferWidget::OnFramebufferWidthChanged(int new_value)
 {
     if (framebuffer_width != new_value) {
         framebuffer_width = new_value;
@@ -168,7 +168,7 @@ void GraphicsFramebufferWidget::OnFramebufferWidthChanged(unsigned int new_value
     }
 }
 
-void GraphicsFramebufferWidget::OnFramebufferHeightChanged(unsigned int new_value)
+void GraphicsFramebufferWidget::OnFramebufferHeightChanged(int new_value)
 {
     if (framebuffer_height != new_value) {
         framebuffer_height = new_value;

src/citra_qt/debugger/graphics_framebuffer.h

@@ -62,8 +62,8 @@ public:
 public slots:
     void OnFramebufferSourceChanged(int new_value);
     void OnFramebufferAddressChanged(qint64 new_value);
-    void OnFramebufferWidthChanged(unsigned int new_value);
-    void OnFramebufferHeightChanged(unsigned int new_value);
+    void OnFramebufferWidthChanged(int new_value);
+    void OnFramebufferHeightChanged(int new_value);
     void OnFramebufferFormatChanged(int new_value);
     void OnUpdate();