macosx: fix warning about missing method implementation

modules/gui/macosx/prefs_widgets.h

@@ -46,8 +46,6 @@ static NSMenu *o_keys_menu = nil;
 
 - (id)initWithFrame:(NSRect)frame
                item:(module_config_t *)p_item;
-- (id)initWithItem:(module_config_t *)_p_item
-          withView:(NSView *)o_parent_view;
 
 - (void)setYPos:(int)i_yPos;
 - (void)alignWithXPosition:(int)i_xPos;
@@ -59,62 +57,101 @@ static NSMenu *o_keys_menu = nil;
 
 @interface StringConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface StringListConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface FileConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 - (IBAction)openFileDialog:(id)sender;
 
 @end
 
 @interface ModuleConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface IntegerConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 - (IBAction)stepperChanged:(id)sender;
 
 @end
 
 @interface IntegerListConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface RangedIntegerConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 - (IBAction)sliderChanged:(id)sender;
 
 @end
 
 @interface BoolConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface FloatConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 - (IBAction)stepperChanged:(id)sender;
 
 @end
 
 @interface RangedFloatConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 - (IBAction)sliderChanged:(id)sender;
 
 @end
 
 @interface KeyConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface ModuleListConfigControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end
 
 @interface SectionControl : VLCConfigControl
 
+- (id)initWithItem:(module_config_t *)_p_item
+          withView:(NSView *)o_parent_view;
+
 @end