Free allocated memory before throwing exceptions

src/zxing/zxing/datamatrix/decoder/DataMatrixDecodedBitStreamParser.cpp

@@ -404,6 +404,7 @@ void DecodedBitStreamParser::decodeBase256Segment(Ref<BitSource> bits, ostringst
     // Have seen this particular error in the wild, such as at
     // http://www.bcgen.com/demo/IDAutomationStreamingDataMatrix.aspx?MODE=3&D=Fred&PFMT=3&PT=F&X=0.3&O=0&LM=0.2
     if (bits->available() < 8) {
+      delete [] bytes;
       throw FormatException("byteSegments");
     }
     bytes[i] = unrandomize255State(bits->readBits(8), codewordPosition++);

src/zxing/zxing/qrcode/decoder/QRDecodedBitStreamParser.cpp

@@ -229,6 +229,7 @@ void DecodedBitStreamParser::decodeNumericSegment(Ref<BitSource> bits, std::stri
     while (count >= 3) {
         // Each 10 bits encodes three digits
         if (bits->available() < 10) {
+            delete[] bytes;
             throw ReaderException("format exception");
         }
         int threeDigitsBits = bits->readBits(10);

src/zxing/zxing/qrcode/encoder/QREncoder.cpp

@@ -416,6 +416,7 @@ BitArray* Encoder::interleaveWithECBytes(const BitArray& bits,
         message += " and ";
         message += zxing::common::StringUtils::intToStr(result->getSizeInBytes());
         message += " differ.";
+        delete result;
         throw WriterException(message.c_str());
     }