Fix some warning in the UI

SourceX/DiabloUI/credits.cpp

@@ -519,7 +519,8 @@ void credts_Render()
 				x += 40;
 			}
 
-			if (text_surface = TTF_RenderUTF8_Solid(font, the_long_credits[creditLine + i] + offset, color)) {
+			text_surface = TTF_RenderUTF8_Solid(font, the_long_credits[creditLine + i] + offset, color);
+			if (text_surface) {
 				SDL_Rect src_rect = { 0, -y, SCREEN_WIDTH, 251 };
 				SDL_Rect dsc_rect = { 64 + x, 160 + 114, SCREEN_WIDTH, SCREEN_HEIGHT };
 				SDL_BlitSurface(text_surface, &src_rect, pal_surface, &dsc_rect);

SourceX/DiabloUI/diabloui.cpp

@@ -543,7 +543,7 @@ int GetStrWidth(char *str, int size)
 {
 	int strWidth = 0;
 
-	for (int i = 0; i < strlen((char *)str); i++) {
+	for (size_t i = 0; i < strlen((char *)str); i++) {
 		BYTE w = FontTables[size][*(BYTE *)&str[i] + 2];
 		if (w)
 			strWidth += w;
@@ -633,7 +633,7 @@ void DrawArtStr(UI_Item *item)
 	if (item->flags & UIS_VCENTER)
 		sy += (item->rect.h - ArtFonts[size][color].height) / 2;
 
-	for (int i = 0; i < strlen((char *)item->caption); i++) {
+	for (size_t i = 0; i < strlen((char *)item->caption); i++) {
 		if (item->caption[i] == '\n') {
 			sx = x;
 			sy += ArtFonts[size][color].height;

SourceX/DiabloUI/diabloui.h

@@ -68,7 +68,7 @@ typedef struct UI_Item {
 	int flags;
 	int value;
 	char *caption;
-	void *context;
+	const void *context;
 } UI_Item;
 
 extern TTF_Font *font;

SourceX/DiabloUI/title.cpp

@@ -27,7 +27,7 @@ BOOL UiTitleDialog(int a1)
 	title_Load();
 
 	bool endMenu = false;
-	int timeOut = SDL_GetTicks() + 7000;
+	Uint32 timeOut = SDL_GetTicks() + 7000;
 
 	SDL_Event event;
 	while (!endMenu && SDL_GetTicks() < timeOut) {