Fix potential division by zero in DetectGrayscaleImage (#1696)

ge0rdi · ge0rdi · commit 8359cfcc81f1 · 2023-09-13T10:27:02.000+02:00
diff --git a/Src/StartMenu/StartMenuDLL/ItemManager.cpp b/Src/StartMenu/StartMenuDLL/ItemManager.cpp
@@ -136,6 +136,8 @@ static void CreateAppResolver( void )
 
 static bool DetectGrayscaleImage( const unsigned int *bits, int stride, int width, int height )
 {
+	if (width==0 || height==0)
+		return false;
 	int transparent=0;
 	for (int y=0;y<height;y++,bits+=stride)
 	{

Original file line number	Diff line number	Diff line change
`@@ -136,6 +136,8 @@ static void CreateAppResolver( void )`
`136`	`136`
`137`	`137`	`static bool DetectGrayscaleImage( const unsigned int *bits, int stride, int width, int height )`
`138`	`138`	`{`
	`139`	`+ if (width==0 \|\| height==0)`
	`140`	`+ return false;`
`139`	`141`	`int transparent=0;`
`140`	`142`	`for (int y=0;y<height;y++,bits+=stride)`
`141`	`143`	`{`