Fix #533 - Apply patch proposed by Dominique Nerriec

src/makernote_int.cpp

@@ -989,7 +989,7 @@ namespace Exiv2 {
             // Require at least the header and an IFD with 1 entry
             if (size < PentaxDngMnHeader::sizeOfSignature() + 18)
                 return 0;
-            return newPentaxDngMn2(tag, group, pentaxDngId);
+            return newPentaxDngMn2(tag, group, (tag == 0xc634 ? pentaxDngId:pentaxId));
         } else if (size > 4 && std::string(reinterpret_cast<const char*>(pData), 4) == std::string("AOC\0", 4)) {
             // Require at least the header and an IFD with 1 entry
             if (size < PentaxMnHeader::sizeOfSignature() + 18)