Update lodepng_util.cpp to the latest version

lvandeve · lvandeve · commit 16e07418ad1b · 2016-03-30T19:19:33.000+02:00
diff --git a/src/zopflipng/lodepng/lodepng_util.cpp b/src/zopflipng/lodepng/lodepng_util.cpp
@@ -95,8 +95,13 @@ unsigned getChunks(std::vector<std::string> names[3],
     {
       location = 2;
     }
-    else if(name != "IEND")
+    else if(name == "IEND")
+    {
+      break; // anything after IEND is not part of the PNG or the 3 groups here.
+    }
+    else
     {
+      if(next > end) return 1; // invalid chunk, content too far
       names[location].push_back(name);
       chunks[location].push_back(std::vector<unsigned char>(chunk, next));
     }

Original file line number	Diff line number	Diff line change
`@@ -95,8 +95,13 @@ unsigned getChunks(std::vector<std::string> names[3],`
`95`	`95`	`{`
`96`	`96`	`location = 2;`
`97`	`97`	`}`
`98`		`- else if(name != "IEND")`
	`98`	`+ else if(name == "IEND")`
	`99`	`+ {`
	`100`	`+ break; // anything after IEND is not part of the PNG or the 3 groups here.`
	`101`	`+ }`
	`102`	`+ else`
`99`	`103`	`{`
	`104`	`+ if(next > end) return 1; // invalid chunk, content too far`
`100`	`105`	`names[location].push_back(name);`
`101`	`106`	`chunks[location].push_back(std::vector<unsigned char>(chunk, next));`
`102`	`107`	`}`