Switch to std::copy

SHNFileDecryptor/SHNFileDecryptor.h

@@ -145,14 +145,8 @@ void SHNFile::Decrypt(){
 }
 std::vector<std::byte>&SHNFile::ReadBytes(int bytes){
 	readArr.clear();
-	for(int i=0;i<bytes;i++){
-		if(marker<data.size()){
-			readArr.push_back(data[marker]);
-			marker++;
-		} else {
-			break;
-		}
-	}
+	std::copy(data.begin()+marker,data.begin()+marker+bytes,std::back_inserter(readArr));
+	marker+=bytes;
 	return readArr;
 }
 std::byte SHNFile::ReadByte(){