Remove extraneous blank lines from source files

Cleaned up unnecessary trailing blank lines in object_registry.h, window_registry.cpp, and window_registry.h. Also fixed minor include and indentation formatting in window_manager_linux.cpp and window_manager_windows.cpp for consistency.

Author: lijy91

src/foundation/object_registry.h

@@ -110,5 +110,3 @@ class ObjectRegistry {
 };
 
 }  // namespace nativeapi
-
-

src/platform/linux/window_manager_linux.cpp

@@ -1,9 +1,9 @@
 #include <cstring>
 #include <iostream>
 #include <mutex>
+#include <set>
 #include <string>
 #include <unordered_map>
-#include <set>
 
 #include "../../window.h"
 #include "../../window_manager.h"
@@ -63,9 +63,9 @@ static void InstallGlobalSwizzling();
 
 // Signal emission hook for show signal
 static gboolean on_show_emission_hook(GSignalInvocationHint* ihint,
-                                       guint n_param_values,
-                                       const GValue* param_values,
-                                       gpointer data) {
+                                      guint n_param_values,
+                                      const GValue* param_values,
+                                      gpointer data) {
   (void)ihint;
   (void)n_param_values;
   (void)data;
@@ -84,9 +84,9 @@ static gboolean on_show_emission_hook(GSignalInvocationHint* ihint,
 
 // Signal emission hook for hide signal
 static gboolean on_hide_emission_hook(GSignalInvocationHint* ihint,
-                                       guint n_param_values,
-                                       const GValue* param_values,
-                                       gpointer data) {
+                                      guint n_param_values,
+                                      const GValue* param_values,
+                                      gpointer data) {
   (void)ihint;
   (void)n_param_values;
   (void)data;

src/platform/windows/window_manager_windows.cpp

@@ -5,8 +5,8 @@
 #include <psapi.h>
 #include "../../window.h"
 #include "../../window_event.h"
-#include "../../window_registry.h"
 #include "../../window_manager.h"
+#include "../../window_registry.h"
 #include "string_utils_windows.h"
 
 #pragma comment(lib, "psapi.lib")

src/window_registry.cpp

@@ -38,5 +38,3 @@ void WindowRegistry::Clear() {
 }
 
 }  // namespace nativeapi
-
-

src/window_registry.h

@@ -28,5 +28,3 @@ class WindowRegistry {
 };
 
 }  // namespace nativeapi
-
-