Remove blank line before the end of some structs

(cherry picked from commit efe764b492)

src/wl_platform.h

@@ -158,7 +158,6 @@ typedef enum _GLFWdecorationSideWayland
     leftDecoration,
     rightDecoration,
     bottomDecoration,
-
 } _GLFWdecorationSideWayland;
 
 typedef struct _GLFWdecorationWayland
@@ -166,7 +165,6 @@ typedef struct _GLFWdecorationWayland
     struct wl_surface*          surface;
     struct wl_subsurface*       subsurface;
     struct wp_viewport*         viewport;
-
 } _GLFWdecorationWayland;
 
 // Wayland-specific per-window data
@@ -216,7 +214,6 @@ typedef struct _GLFWwindowWayland
         _GLFWdecorationWayland             top, left, right, bottom;
         int                                focus;
     } decorations;
-
 } _GLFWwindowWayland;
 
 // Wayland-specific global data
@@ -326,7 +323,6 @@ typedef struct _GLFWlibraryWayland
         PFN_wl_egl_window_destroy window_destroy;
         PFN_wl_egl_window_resize window_resize;
     } egl;
-
 } _GLFWlibraryWayland;
 
 // Wayland-specific per-monitor data
@@ -340,7 +336,6 @@ typedef struct _GLFWmonitorWayland
     int                         x;
     int                         y;
     int                         scale;
-
 } _GLFWmonitorWayland;
 
 // Wayland-specific per-cursor data