Bug 1177024 - Fix clang warnings-as-errors in GTK3 build. r=karlt

--HG--
extra : source : 22ae9b52ec5b25fab359ff32e04072df6412662e

widget/gtk/gtk3drawing.c

@@ -1568,7 +1568,7 @@ moz_gtk_treeview_expander_paint(cairo_t *cr, GdkRectangle* rect,
 
     /* Because the frame we get is of the entire treeview, we can't get the precise
      * event state of one expander, thus rendering hover and active feedback useless. */
-    state_flags = state->disabled ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL;
+    state_flags = state->disabled ? GTK_STATE_FLAG_INSENSITIVE : GTK_STATE_FLAG_NORMAL;
 
     /* GTK_STATE_FLAG_ACTIVE controls expanded/colapsed state rendering
      * in gtk_render_expander()

widget/gtk/nsNativeThemeGTK.cpp

@@ -725,7 +725,7 @@ ThemeRenderer::DrawWithGDK(GdkDrawable * drawable, gint offsetX,
 #else
 class SystemCairoClipper : public ClipExporter {
 public:
-  SystemCairoClipper(cairo_t* aContext) : mContext(aContext)
+  explicit SystemCairoClipper(cairo_t* aContext) : mContext(aContext)
   {
   }
 

widget/gtk/nsWindow.cpp

@@ -1924,7 +1924,7 @@ nsWindow::HasPendingInputEvent()
     // without blocking or removing.  To prevent event reordering, peek
     // anything except expose events.  Reordering expose and others should be
     // ok, hopefully.
-    bool haveEvent;
+    bool haveEvent = false;
 #ifdef MOZ_X11
     XEvent ev;
     GdkDisplay* gdkDisplay = gdk_display_get_default();
@@ -1947,8 +1947,6 @@ nsWindow::HasPendingInputEvent()
             XPutBackEvent(display, &ev);
         }
     }
-#else
-    haveEvent = false;
 #endif
     return haveEvent;
 }