SDL-1.2: Fix resetting OpenGL windows without captions on Windows

From 11c82f642504a28587620e91acfbd7dd6ba00bdf Mon Sep 17 00:00:00 2001
From: Cameron Cawley <[EMAIL REDACTED]>
Date: Tue, 3 Jan 2023 17:09:39 +0000
Subject: [PATCH] Fix resetting OpenGL windows without captions on Windows

---
 src/video/wincommon/SDL_syswm.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/video/wincommon/SDL_syswm.c b/src/video/wincommon/SDL_syswm.c
index 3653ebdca..37db98ac1 100644
--- a/src/video/wincommon/SDL_syswm.c
+++ b/src/video/wincommon/SDL_syswm.c
@@ -211,20 +211,22 @@ typedef BOOL (WINAPI *PtrSetWindowTextW)(HWND hWnd, LPCWSTR lpString);
 
 void WIN_SetWMCaption(_THIS, const char *title, const char *icon)
 {
+	if (title) {
 #ifdef _WIN32_WCE
-	/* WinCE uses the UNICODE version */
-	LPWSTR lpszW = SDL_iconv_utf8_ucs2((char *)title);
-	SetWindowText(SDL_Window, lpszW);
-	SDL_free(lpszW);
+		/* WinCE uses the UNICODE version */
+		LPWSTR lpszW = SDL_iconv_utf8_ucs2((char *)title);
+		SetWindowText(SDL_Window, lpszW);
+		SDL_free(lpszW);
 #else
-	Uint16 *lpsz = SDL_iconv_utf8_ucs2(title);
-	size_t len = WideCharToMultiByte(CP_ACP, 0, lpsz, -1, NULL, 0, NULL, NULL);
-	char *cvt = SDL_stack_alloc(char, len + 1);
-	WideCharToMultiByte(CP_ACP, 0, lpsz, -1, cvt, len, NULL, NULL);
-	SetWindowText(SDL_Window, cvt);
-	SDL_stack_free(cvt);
-	SDL_free(lpsz);
+		Uint16 *lpsz = SDL_iconv_utf8_ucs2(title);
+		size_t len = WideCharToMultiByte(CP_ACP, 0, lpsz, -1, NULL, 0, NULL, NULL);
+		char *cvt = SDL_stack_alloc(char, len + 1);
+		WideCharToMultiByte(CP_ACP, 0, lpsz, -1, cvt, len, NULL, NULL);
+		SetWindowText(SDL_Window, cvt);
+		SDL_stack_free(cvt);
+		SDL_free(lpsz);
 #endif
+	}
 }
 
 int WIN_IconifyWindow(_THIS)