Zero initialize all pointer class and struct members

This prevents the pitfall of UB when checking if they have been
assigned something valid by comparing to nullptr.

4 files changed, 6 insertions, 6 deletions

diff --git a/platform/windows/display_server_windows.h b/platform/windows/display_server_windows.h
index 71fedf2bca..fcf4b5a728 100644
--- a/platform/windows/display_server_windows.h
+++ b/platform/windows/display_server_windows.h
@@ -392,7 +392,7 @@ class DisplayServerWindows : public DisplayServer {
 		Rect2i parent_safe_rect;
 	};
 
-	JoypadWindows *joypad;
+	JoypadWindows *joypad = nullptr;
 	HHOOK mouse_monitor = nullptr;
 	List<WindowID> popup_list;
 	uint64_t time_since_popup = 0;
diff --git a/platform/windows/gl_manager_windows.h b/platform/windows/gl_manager_windows.h
index 6423c54855..f789cba327 100644
--- a/platform/windows/gl_manager_windows.h
+++ b/platform/windows/gl_manager_windows.h
@@ -75,7 +75,7 @@ private:
 	LocalVector<GLWindow> _windows;
 	LocalVector<GLDisplay> _displays;
 
-	GLWindow *_current_window;
+	GLWindow *_current_window = nullptr;
 
 	PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT;
 	PFNWGLGETSWAPINTERVALEXTPROC wglGetSwapIntervalEXT;
diff --git a/platform/windows/joypad_windows.h b/platform/windows/joypad_windows.h
index 4f15bcf080..d239471a5c 100644
--- a/platform/windows/joypad_windows.h
+++ b/platform/windows/joypad_windows.h
@@ -105,10 +105,10 @@ private:
 	typedef DWORD(WINAPI *XInputGetState_t)(DWORD dwUserIndex, XINPUT_STATE *pState);
 	typedef DWORD(WINAPI *XInputSetState_t)(DWORD dwUserIndex, XINPUT_VIBRATION *pVibration);
 
-	HWND *hWnd;
+	HWND *hWnd = nullptr;
 	HANDLE xinput_dll;
 	LPDIRECTINPUT8 dinput;
-	Input *input;
+	Input *input = nullptr;
 
 	int id_to_change;
 	int slider_count;
diff --git a/platform/windows/os_windows.h b/platform/windows/os_windows.h
index 5bfd24327e..adeecf37c5 100644
--- a/platform/windows/os_windows.h
+++ b/platform/windows/os_windows.h
@@ -60,14 +60,14 @@
 class JoypadWindows;
 class OS_Windows : public OS {
 #ifdef STDOUT_FILE
-	FILE *stdo;
+	FILE *stdo = nullptr;
 #endif
 
 	uint64_t ticks_start;
 	uint64_t ticks_per_second;
 
 	HINSTANCE hInstance;
-	MainLoop *main_loop;
+	MainLoop *main_loop = nullptr;
 
 #ifdef WASAPI_ENABLED
 	AudioDriverWASAPI driver_wasapi;