Merge branch 'extractWavFix' of https://github.com/n1073645/CyberChef into n1073645-extractWavFix

src/core/lib/FileSignatures.mjs

@@ -3042,7 +3042,7 @@ export function extractWAV(bytes, offset) {
     stream.moveTo(4);
 
     // Move to file size.
-    stream.moveTo(stream.readInt(4, "le"));
+    stream.moveTo(stream.readInt(4, "le") + 8);
 
     return stream.carve();
 }